You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I support you today?

USER: I am Susan Harris. I need to cancel my reservation due to mu illness. Will you help me in cancelling my reservation?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

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

USER: Ok, thank you for prompt response.

ASSISTANT: Thanks for opting us.