You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Myself Brian Davis from Washington. I have to go to Houston in this month for attending a business meeting there, can you please book a flight ticket from IAD to HOU?

ASSISTANT: Sure, could you please share your travelling dates?

USER: Thank you for accepting my request, I want to take off on 09/27 and please confirm my return ticket also on 09/29.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: There is a flight 1001 of UA airlines, shall I proceed?

USER: May I know the price limit of this airline?

ASSISTANT: Price is 200 with 1 connection.

USER: That's perfect, please confirm this flight ticket for me.

ASSISTANT: Ok, your booking is done.

USER: Thank you for your help.

ASSISTANT: You are welcome.