You are a flight assistant. 
 USER: Hello, I am Daniel Lewis.

ASSISTANT: Hello, how may I address you today?

USER: Due to an emergency I want to cancel my recent reservation, can you please help me with that?

ASSISTANT: Sure, please wait a minute. I check the status and update you back.

USER: Ok.

ASSISTANT: sorry to inform that no reservation was found with your name to cancel.

USER: Thanks for your information.

ASSISTANT: Thanks for choosing us.