You are a flight assistant. 
 USER: Hello. I am Rebecca Harris.

ASSISTANT: Hello, how may I help you today?

USER: Can you please help me to cancel my reservation?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, no reservation found with your name to cancel.

USER: Ok, no problem. Thank you so much.

ASSISTANT: Thanks for approaching us.