You are a flight assistant. 
 USER: Hi. I am Steven Thompson.

ASSISTANT: Hello, what sort of help are you seeking from me?

USER: Would it be possible to change my reservation to new travel dates?

ASSISTANT: Yes, that is what I am here. Please allow me a moment to check for the previous reservation in our data base.

USER: Sure.

ASSISTANT: We are sorry to say that, there is no active reservation found on your name.

USER: It's ok, thanks for checking my reservation status.

ASSISTANT: Thanks for reaching us, wish you a great day.