You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Owing to an emergency, I want to cancel my recent reservation.

ASSISTANT: Sure, may I know your name?

USER: My name is Samantha Adams.

ASSISTANT: Sorry, there was no reservation found on your name.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.