You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hi.

USER: Myself David Hill. Will you help me in booking flight ticket?

ASSISTANT: Yes, David Hill we are here to help you may I Know the booking details .

USER: Sure, My origin:GA-ATL,  Destination:WA-SEA and having connections:0 and price limit 5000.

ASSISTANT: Please wait a while I Will let you know the information of the booking.

USER: My departure Dec 26 and return is on Dec 28 and need a class limit: Business.

ASSISTANT: Ok, Wait for a while.

USER: Sure, I will.

ASSISTANT: Thank you for being online there is a ticket with your requriment.

USER: OK, Please confirm my booking.

ASSISTANT: Ticket has been booked thank you.

USER: Thank you for your service.