You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Rebecca Thompson here. I want to cancel my recent reservation due to the change in venue of the upcoming comic con.

ASSISTANT: Ok, wait for a while.

USER: Sure.

ASSISTANT: Sorry there is no reservation found on your name. Thanks for choosing us.

USER: Ok, no problem. Thanks for the information.