You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I render you at this moment?

USER: I want to cancel my existing reservation as I am not well and cannot go on the trip, Can you please help?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can I know your good name please?

USER: Sure, my name is Karen Edwards.

ASSISTANT: We found a reservation on your name and it was cancelled.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.