You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: My name is Shirley Baker.

ASSISTANT: How can I assist you Baker?

USER: I couldn't bear my expenses and would like to cancel my reservation. Can you please cancel my ticket?

ASSISTANT: Sure, please be on hold while I'll check for your reservation status.

USER: Ok, take your time.

ASSISTANT: There is no reservation found under your name to do cancellation Baker.

USER: Oh! I guess I have cancelled it before. I have a short term memory loss. Anyways, thank you for the information.

ASSISTANT: That's ok, thank you so much for choosing us to help you.