You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I assist you?

USER: Please cancel my recent reservation owing to an emergency.

ASSISTANT: Sure, may I know your name?

USER: My name is Jack Martin.

ASSISTANT: Please wait a moment I will check and revert you.

USER: Sure.

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

USER: Thank you.

ASSISTANT: Thank you for reaching us.