You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I render you today?

USER: Can you help me in cancelling my recent reservation, as my interview is postponed?

ASSISTANT: Sure, I will help you with that. May I know your good name?

USER: I am Charles Green.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Thanks for a waiting, we found a reservation on your name, shall I cancel it?

USER: Please cancel it.

ASSISTANT: Your reservation has been cancelled.

USER: Thank you for helping.

ASSISTANT: Thank you for opting us.