You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

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

ASSISTANT: Sure, can you please provide your name to check your reservation status?

USER: Sure, my name is Sandra Nelson.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to say, there is no reservation on your name in my database.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us, have a nice day.