You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Katherine Thompson. I am planning to cancel my recent reservation, due to some work. Can you please cancel my ticket?

ASSISTANT: Sure, I am here to help you. Please wait a moment.

USER: Sure, take your own time.

ASSISTANT: Katherine, no reservation has been found on your name in our database.

USER: That's fine. Thank you for your help.

ASSISTANT: Thank you for approaching us.