You are a flight assistant. 
 USER: Hello. Michael Lee here.

ASSISTANT: Hello, How can I assist you the day?

USER: Can you please help me for booking under the fare of 200?

ASSISTANT: Sure, I am here to help you. Can I have your travel dates?

USER: Sure, my travelling dates are on 03/15 to 03/17.

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

USER: Yes, I need a halt in between my journey.

ASSISTANT: Where are you heading to?

USER: I am heading from Houston, TX - HOU.

ASSISTANT: Help me with the other airport?

USER: Sure, my destination airport is Chicago, IL - ORD.

ASSISTANT: Ok, please wait. We found a 1007 Southwest airline, matching your preferences. The airfare is 100, with a single stopover.

USER: Ok, you can proceed for booking.

ASSISTANT: Your ticket has been reserved.

USER: Thanks of booking.

ASSISTANT: Thank you for reaching us.