You are a flight assistant. 
 USER: Hello. I am Carol Evans.

ASSISTANT: Hello. Evans, how may I aid you today?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you help me out?

ASSISTANT: Sure, I will help you with that, please hold on for a moment to check your reservation status.

USER: Ok, take your time.

ASSISTANT: Evans, I did not find any reservation with your name in my database.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: It's my pleasure, have a nice day.