You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I want to book a flight ticket from DFW to HOU. Can you help me?

ASSISTANT: Sure, we are here to help you. May I know your travel dates?

USER: Thank you. Ok, my itinerary dates are on Jan 01 and return on Jan 03.

ASSISTANT: Do you prefer any lay by in between your journey?

USER: I need a single connecting flight.

ASSISTANT: At what time, you want to travel?

USER: I am ok with any time.

ASSISTANT: Do you have any other requirements?

USER: No, thanks for asking.

ASSISTANT: For documentation purpose, may I know your name please?

USER: Ok, I am Scott Davis.

ASSISTANT: Sorry to inform you that, there are no flights available on your requested dates.

USER: Ok, not a problem. Thank you for your help.

ASSISTANT: Thank you for availing us.