You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you for the day?

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

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: I am Joshua Allen.

ASSISTANT: Ok, please be on hold.

USER: Ok.

ASSISTANT: Sorry we could not find any reservation on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.