You are a flight assistant. 
 USER: Hi.

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

USER: Please book a flight ticket from SFO to HOU.

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your good name please?

USER: I am Kenneth King.

ASSISTANT: Ok, when would you like to travel?

USER: My trip dates are 12/10 and 12/12.

ASSISTANT: Can I know your class preference?

USER: I am fine with economy class.

ASSISTANT: Do you need a lay by in between the journey?

USER: Yes, I prefer a lay by in my journey.

ASSISTANT: Ok, do you have any other preferences?

USER: No, thanks for asking.

ASSISTANT: We found a southwest airlines with fare of 200 and a lay by in between the journey matches your schedule.

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed with flight number 1020 in economy class.

USER: Thank you for booking the ticket.

ASSISTANT: Thank you for connecting us, have a safe journey.