You are a flight assistant. 
 USER: Hello.

ASSISTANT:  Hello, How exactly I can serve you the best today?

USER: I am Mark Mitchell. I would like to go for NASA Space Centre at Houston, HOU. Can you please book a ticket for me?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Kindly, mention your origin airport code.

USER: Boarding point is Phoenix, PHX.

ASSISTANT: Do you need any connection in your journey?

USER: I need halt in between my journey.

ASSISTANT: When you are willing to start your journey?

USER: Trip dates are 12/26 to 12/28.

ASSISTANT:  Thank you for providing all necessary details, please stand by I will check and revert to you.

USER: Sure.

ASSISTANT: Thank you for your valuable time. You have a flight with airline Spirit and flight number is 1003 with layover and price is 200. Can I reserve your seat?

USER: You can proceed.

ASSISTANT: Your reservation is done.

USER: Thank you.

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