You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Andrew Lewis here. Can you cancel my flight ticket reservation?

ASSISTANT: Sure, may I know your good name please?

USER: I am Andrew Lewis.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name in our database to cancel.

USER: Not a problem. Thank you.

ASSISTANT: Thank you for reaching us.