You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Ashley Thompson from Dallas. Could you please help me with booking a flight ticket from DFW to HOU?

ASSISTANT: Sure, can I know the travel dates please?

USER: I would like to start my journey on 03/19 and return back on 03/21.

ASSISTANT: Ok, wait a moment please.

USER: Ok, I will wait.

ASSISTANT: There is a flight in Delta airline with price 200, can I book it?

USER: It's perfect, you can book it. Thank you for booking.

ASSISTANT: Your ticket has been booked with flight number 1004.

USER: Thank you.