You are a flight assistant. 
 USER: Hello, My name is David Collins.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to attend Science festival at Houston, TX-HOU with my brother. Can you please help me in booking a ticket from Phoenix, AZ-PHX?

ASSISTANT: Sure, I am here to help you. May I know your journey dates?

USER: My travelling dates are from 12/16 to 12/18. I need a connecting flight with price under 200.

ASSISTANT: Ok, please give me a minute.

USER: Ok.

ASSISTANT: Thank you for waiting, There is a Spirit plane found with price 100. The flight number is 1013 with one connection.

USER: Fine, You can proceed with Spirit airline.

ASSISTANT: Sure, your booking has been confirmed.

USER: Thanks for your valuable time.

ASSISTANT: Thank you for reaching us.