You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I render you at this moment?

USER: Please book a flight ticket to Houston as I need to submit my record at Houston University.

ASSISTANT: Sure, I can help you as per your request.

USER: Thank you.

ASSISTANT: Will you please share your planned trip dates?

USER: My travelling dates are from 11/22 to 11/24.

ASSISTANT: If you provide your travelling airport codes, I can check the best flights for you?

USER: Sure, my source code is DCA and Destination code is HOU.

ASSISTANT: In mean while will you please share your name?

USER: OK, I am Michelle Johnson.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: There is a Spirit 1002 airline with fare of 100 and a halt in between the journey. Shall I proceed with booking?

USER: That exactly matches my requirement, please go ahead.

ASSISTANT: Sure, your booking has been confirmed on name of Michelle Johnson.

USER: Thanks for your kind service.

ASSISTANT: Thank you for choosing us, have a nice day.