You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I need your help to cancel my recent reservation.

ASSISTANT: May I know your name please?

USER: My name is Debra Mitchell.

ASSISTANT: OK Debra, please wait a moment.

USER: Sure.

ASSISTANT: Sorry there is no reservation found under your name.

USER: That's OK. Thank you for the information.

ASSISTANT: Thank you for contacting us, have a good day.