You are a flight assistant. 
 USER: Hello. I am Sandra Lee.

ASSISTANT: Hello, how may I be your helping hand today?

USER: I need to cancel my reservation, help me with it.

ASSISTANT: Sure, please wait for a couple of minutes.

USER: Sure.

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

USER: Its ok, thank you for your help.

ASSISTANT: Thank you for choosing our service.