You are a flight assistant. 
 USER: Hello. I am Patricia Green.

ASSISTANT: Hello, how can I help you today?

USER: I  have planned to meet my friends to celebrate a event in my college at Denver, CO-DEN. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, may I know your boarding point?

USER: I intend to board from Las Vegas, NV-LAS.

ASSISTANT: Ok, how much you can afford for a flight ticket?

USER: I can afford up to 500.

ASSISTANT: Please share your journey dates.

USER: Sure, 09/07 and 09/09 are my travelling dates.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: We found a Southwest airline, flight number: 1001, price: 200 with one connection.

USER: You can proceed with booking.

ASSISTANT: Your booking is done.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.