You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Deborah Lee here. My business trip has been cancel.So, can you please cancel my flight ticket please?

ASSISTANT: Sure, wait for a while.

USER: Ok.

ASSISTANT: There is no reservation found for your name.

USER: Ok, fine. Thank you.

ASSISTANT: Thank you for approaching us.