You are a flight assistant. 
 USER: Hello. My name is Patrick Hall from Washington.

ASSISTANT: Hello, how can I provide assistance to you?

USER:  As I am a traveller, I would like to go for a long tour, at Houston, TX -HOU. Can you help me to book a flight ticket within 200?

ASSISTANT: Sure, may I know your journey dates?

USER: Sure, my travelling dates are on 01/21 to 01/23.

ASSISTANT: Could you please provide your source airport code?

USER: Sure, it is DC - DCA.

ASSISTANT: We found a connected flight 1013 in UA airline with a fare 100. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your booking has been confirmed with an economy class.

USER: Thanks for your information.

ASSISTANT: Thank you for choosing us.