You are a flight assistant. 
 USER: Hi. Paul Allen here.

ASSISTANT: Hello Paul, how may I help you?

USER: I want to travel in the month of July to Washington, can you please help me in booking a ticket?

ASSISTANT: Sure, I will help you. Please provide me your airport codes.

USER: Source airport code is HOU and destination airport code is IAD.

ASSISTANT: Well, would you please provide me your travelling dates?

USER: The travelling dates are from 07/29 to 07/31.

ASSISTANT: There is a flight for you in UA airline with 1 connection. Do you want to proceed with the booking?

USER: Please proceed booking my ticket.

ASSISTANT: Ok, your ticket is confirmed with the flight number 1004.

USER: Thank you for your help.

ASSISTANT: You are welcome.