You are a flight assistant. 
 USER: Hello, George Turner here.

ASSISTANT: Hello, how may I serve you?

USER: Sudden, my friend is dropped her plan. So, can you cancel the recent reservation?

ASSISTANT: Sure. I have to check that whether you have previously booked any flight ticket. Please wait.

USER: Ok.

ASSISTANT: Sorry, I searched but could not find any reservation.

USER: It's fine. Thank you.

ASSISTANT: Thanks for reaching to us.