You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you?

USER: Owing to emergency, I need to change my recent reservation. Please help me in that.

ASSISTANT: Sure, I am perky to help you. May I have your good name to check in the reservation list?

USER: My name is Matthew White.

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

USER: Nothing to worry, thanks for your information.

ASSISTANT: Thank you for availing us.