You are a flight assistant. 
 USER: Hiu.

ASSISTANT: Hello. How can I help you?

USER: I am Dorothy Clark. Can you please cancel my recent reservation?

ASSISTANT: Please wait a while.

USER: Sure.

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

USER: Not an issue. Thank you for checking.

ASSISTANT: Thank you for opting us.