You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure, I am here to help you. May I know your name?

USER: My name is Helen Moore.

ASSISTANT: Thank you. Please be on hold for a while, let me check your reservation status in our database.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found under your name in our database.

USER: Ok, thank you.

ASSISTANT: You are most welcome.