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 to HOU to give a seminar at University of Houston. So, kindly book a flight ticket from DFW.

ASSISTANT: Sure, may I know your good name please?

USER: My name is Charles Hill.

ASSISTANT: Sure, can you please share your travelling dates?

USER: Yes, I have planned to start my journey on 15 Oct and return on Oct 17.

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

USER: Yes, I need a stopover in between the journey.

ASSISTANT: Ok, do you have any time specifications?

USER: No, I am comfortable to travel at any time.

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

USER:     That's perfect, please go ahead and reserve my ticket.

ASSISTANT: Your ticket has been confirmed with flight number 1017.

USER: Thank you for the assistance.

ASSISTANT: Thank you for reaching us.