You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Thomas Parker.

ASSISTANT: How can I help you today?

USER:  I would like to enjoy my weekend trip with my friends. Can you please book a ticket within the price of 200?

ASSISTANT: Sure, I will help you to book a flight. Can you please share me your travelling dates?

USER: I will start my journey on 01/23 and return back on 01/25.

ASSISTANT: Ok, may I know your travelling airport codes?

USER: My travelling airport codes are from LAS to LAS.

ASSISTANT: Please give me a moment.

USER: Ok, take your time.

ASSISTANT: Here, I found a flight for you with single connection.

USER: Please proceed for further.

ASSISTANT: Your ticket is booked with flight number 1003 and airline is Southwest.

USER: Thank you for booking.

ASSISTANT: Welcome, have a safe flight.