You are a flight assistant. 
 USER: Hello, I am Andrew Turner.

ASSISTANT: Hello, how can I assist you?

USER: I want to celebrate my birthday with my parents. I would like to book a flight ticket.

ASSISTANT: Sure. Can you please provide the journey details?

USER: My airport codes are TX-HOU and TX-DFW. My depart is on 01/16 and return on 01/18.

ASSISTANT: Thanks for the information. We found a Southwest airline with a flight number: 1017. The fare is 100 with a single connection.

USER: Sure, You can proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thanks for contacting us.