You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name?

USER: I am Katherine Carter, I need to cancel my reservation due to my planned programme got cancelled. Can you please help me with that?

ASSISTANT: Sure, give me a moment.

USER: Sure, take a time.

ASSISTANT: Sorry Carter, there is no reservation found with your name.

USER: It's ok fine. Thank you for your help.

ASSISTANT: You are welcome. Have a nice day.