You are a flight assistant. 
 USER: Hello, I am Gregory Walker.

ASSISTANT: Hello,. How can I serve you today?

USER: I am going out for a vacation to IAD, to visit White house.

ASSISTANT: Ok.

USER: Please book a flight with in a limit of 5000.

ASSISTANT: Sure, I will help you in booking your flight ticket. May I know your dates of travel?

USER: I am planning on 09/15. And I will return on 09/17.

ASSISTANT: Share your origin point.

USER: My origin is ORD.

ASSISTANT: AA as airline with 1006 flight number. Connection limit 1 with fare of 100, that matches your credentials.

USER: Ok, Please confirm my ticket.

ASSISTANT: Your ticket has been reserved.

USER: Thanks for helping me.

ASSISTANT: Thank you for reaching us for your service.