You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you aid me in booking a flight ticket from IAD to HOU?

ASSISTANT: Sure, I can help you. May I know your name?

USER: Myself Larry Miller.

ASSISTANT: Thank you. Can I know your travel dates?

USER: Sure, I would like to go on Nov 20th and return back on Nov 22nd.

ASSISTANT: Ok, is there any class preference?

USER: Any class is fine for me.

ASSISTANT: Ok, please be on hold for a while.

USER: Sure, take your time.

ASSISTANT: Flight-1000 is available in AA airlines having single connection and the ticket fare is 100 only. Flight departs at 19:00 hours and arrives at 10:00 hours. Can I book the ticket for you?

USER: Ok, please proceed for further.

ASSISTANT: Your ticket is booked successfully, Have a nice day.

USER: Thank you for booking.

ASSISTANT: You are most welcome.