You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Jerry Campbell here.

ASSISTANT: Yes, Jerry.

USER: I need to attend an musical concert in Houston-HOU, so I want to book a ticket from Washington-IAD.

ASSISTANT: Sure, please provide me your preferable dates?

USER: I am departing on 08/25 and return on 08/27.

ASSISTANT: Please wait a moment.

USER: Sure, take your time.

ASSISTANT: Here is a flight with 1 connection and price is 200. Can I proceed with it?

USER: Please proceed for booking.

ASSISTANT: Your ticket has been booked in economy class with Southwest airline. Your flight number is 1023.

USER: Thank you for your help.

ASSISTANT: Welcome.