You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Actually my Business Meeting is postponed so that I want to cancel my recent reservation, can you help me?

ASSISTANT: Sure, I can help you, wait for a moment.

USER: Ok, take your own time.

ASSISTANT: Can I have your good name for checking?

USER: Sure, I am Robert Carter.

ASSISTANT: Robert Carter, there is no ticket booked on your requested name.

USER: Oh! that's fine.

ASSISTANT: Thank you approaching us Robert. Have a nice day.

USER: Thank you for your information.

ASSISTANT: Welcome.

USER: You are welcome.