You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you at this moment?

USER: I want to book a flight ticket from HOU to DEN. Could you help me in booking?

ASSISTANT: Sure, do you need a lay by in between the journey?

USER: My travelling dates are from Nov 11 - 13.

ASSISTANT: Do you prefer economy or business class?

USER: No.

ASSISTANT: May I know your good name please?

USER: Raymond Jones.

ASSISTANT: Do you have any other preferences?

USER: I prefer for connecting flight.

ASSISTANT: We found a Southwest Airlines with fare of 100 and a lay by in between the journey matches your schedule.

USER: Yes, please proceed.

ASSISTANT: Your ticket has been confirmed with flight number 1015.

USER: Thank you.

ASSISTANT: Thank you for reaching us.