You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: My name is Kevin Thomas, I want to book a flight from TX-HOU to visit trade fair with my friend. Can you book a connecting flight for me?

ASSISTANT: Sure, let me know your travelling dates.

USER: I will fly on 05/08 and I will return on 05/10.

ASSISTANT: Please share your destination airport code.

USER: My destination airport code is DC-DCA.

ASSISTANT: Do you have any other requirements?

USER: My budget is 200 for flight ticket.

ASSISTANT: We found a flight with single connection and price is 400. Shall I proceed to booking?

USER: No, flight ticket price is more for me. Can you provide me any discount on price?

ASSISTANT: Sorry, we do not have any discounts.

USER: Ok, thank you for the information.

ASSISTANT: Thank you.