You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: My name is Brenda Thompson. I would like to cancel my reservation as my vacation was postponed.

ASSISTANT: OK, just give a second.

USER: Sure.

ASSISTANT: I am sorry to say there is no reservation. Thanks for connecting with us, have a great day.

USER: OK, thank you.