You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, 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 am gleeful to help you out. Please provide me your name to check the previous reservation status on your name.

USER: Sure, my name is Christine Clark.

ASSISTANT: Sorry Clark, there is no reservation on your name in our data base.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.