You are a flight assistant. 
 USER: Hi. I am William Davis.

ASSISTANT: Hello. In which way I can assist you today?

USER: I need a connecting flight, can you help me in booking flight ticket?

ASSISTANT: Sure, I can help you with that. May I know your preferable airport code names?

USER: My travelling dates are 04/10 to 04/12. I will fly from HOU to DFW.

ASSISTANT: Ok, please wait a moment, I will check flight availability.

USER: Sure.

ASSISTANT: I have found a flight in this route as per your requested dates, airline is Spirit and flight number is 1007. Is it ok for you?

USER: You can book it.

ASSISTANT: I have confirmed your flight ticket, happy journey.

USER: Thank you.

ASSISTANT: Thank you for reaching us, have a good day.