You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can we assist you?

USER: Due to issues happening on departition of states at my visiting location, I want to postpone my trip to some other dates. Can you please help me with that?

ASSISTANT: Sure, I can help you. Can you please provide me your name?

USER: Please, check my previous reservation on Scott Walker.

ASSISTANT: Ok, I will check and get back to you.

USER: Sure, take your own time.

ASSISTANT: Sorry Walker, I have not found any reservation by your name in our database.

USER: That's ok, not an issue.

ASSISTANT: What else I can do for you?

USER: Nothing more, thank you for your information.

ASSISTANT: You are welcome, thank you for approaching us.