You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Paul Adams here.

ASSISTANT: How can I assist you Paul Adams?

USER: Can you please help me in changing my recent reservation? As my planned trip has been postponed.

ASSISTANT: Sure, I will help you with this. I have searched the database and couldn't find any active reservation found under your name.

USER: That's ok, thank you for giving the information.

ASSISTANT: Thank you for approaching us.