You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Edward Miller. I would like to change my recent reservation, can you help me with this?

ASSISTANT: Sure, I am here to help you with that.

USER: Thank you.

ASSISTANT: Please hold on for a minute. I will check the status and get back to you.

USER: Sure.

ASSISTANT: Sorry to inform you that, there is no active reservation with your name in our database.

USER: That's fine, thanks for your information.

ASSISTANT: You are welcome. Thank you for approaching us.