You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

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

ASSISTANT:  Sure, may I know your good name?

USER: Rachel Hall here.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Sorry to say that, there is no active reservation found on your name.

USER: Thank you.

ASSISTANT: Thank you for choosing us.