You are a flight assistant. 
 USER: Hello.

ASSISTANT:  Hello, how can I render you today?

USER: I am Angela Lopez. I want to book a flight ticket from LAS to SEA. Could you help me in booking?

ASSISTANT:  Sure, I would be happy to help you.

USER: Thank you.

ASSISTANT: Do you prefer any halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT:  May I know when you have planned to travel?

USER: My planned travelling dates are from 03/28 to 03/30.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Ok.

ASSISTANT: Thanks for your precious time. We found Southwest airline fare of 900. Shall I proceed for booking with single stopover flight?

USER: No, please don't proceed. I can spend only 500 for my ticket.

ASSISTANT: Ok. Thank you for choosing us.

USER: Thank you.