You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How may I assist you?

USER: I am Brandon Martin. I want to book a flight ticket with a single connection, will you help me in booking a flight ticket?

ASSISTANT: Sure. Please provide your travelling codes?

USER: Sure, my departure is 11/28 and my return date on 11/30.

ASSISTANT: May I know your travelling codes?

USER: I am planning to visit National Mall in DC - IAD and my origin from TX - IAH. My price limit is 1000.

ASSISTANT: Ticket is available with airline UA, price 100. Flight number 1026, connections 1.

USER: You can proceed to booking.

ASSISTANT: Flight ticket is booked.

USER: Thanks for your service.

ASSISTANT: Thanks.