You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I need your help to change my reservation because my trip has been postponed.

ASSISTANT: Sure, I will help you with that, can I know your good name to proceed further?

USER: Eric Scott here.

ASSISTANT: Thank you. Please be online for a while. I will check your reservation status and get back to you.

USER: Sure.

ASSISTANT: I am sorry to say you that there is no reservation found under your name in our database.

USER: No problem, thank you for helping.

ASSISTANT: Thank you for reaching us.