You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure, may I know your name please?

USER: My name is Frank Lewis.

ASSISTANT: We have not found any reservation on your name.

USER: Ok, Thanks for the information.

ASSISTANT: Thanks for choosing us. Have a good day.