You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, I will help you cancel your flight ticket.

USER: Thank you.

ASSISTANT: May I know your name?

USER: I am Sarah Carter.

ASSISTANT: Please wait for a moment, while I check for the reservation.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no any reservation found on your name.

USER: Ok, not a problem.

ASSISTANT: Thank you for visiting us, have a nice day ahead.

USER: Thanks for helping me.