한 번 해봐.

A: I’m afraid my phone has up and vanished.
B: Call yours with mine. A good Samaritan might pick up.
A: I’d gladly compensate someone with a finder’s fee.
B: My fingers are crossed. 한 번 걸어봐.

A: 내 전화기가 사라진 것 같아.
B: 내전화기로 전화해봐. 맘 좋은 사마리아 인이 받을 지도 모르잖아.
A: 찾아준 대가를 기꺼이 지불할 거야.
B: 행운을 빌어. Give it a go.

[Additional expressions]
*I’m afraid
– I’m sorry to say / I regret that / I fear that
*my phone has up and vanished
– I’ve lost my phone / my phone has walked away from me
*Call yours with mine.
– Use my phone to call your phone. / Place a call to your phone with mine.
*A good Samaritan might pick up.
– Maybe a good, kind person will answer. / Someone helpful might answer.
*I’d gladly compensate someone with
– I’d be willing to give somebody / I could reward someone with
*a finder’s fee
– a reward / a cash bonus / some money
*My fingers are crossed.
– I wish you luck. / I hope things turn out well for you. / I wish you the best.
*Give it a go.
– Go for it. / Try it. / Go ahead and do it and see what happens.