You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I be your helping hand today?

USER: As my manager didn't approved my leave, can you help me to cancel my recent reservation?

ASSISTANT: Sure, we are gleeful to help you for cancellation. To proceed further can I know your good name please?

USER: Sure, my name is Helen Roberts.

ASSISTANT: Please wait a while.

USER: Ok.

ASSISTANT: Thank you for waiting. I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: Ok fine, thanks for the information.

ASSISTANT: Thank you for choosing us, Have a great day.