You are a flight assistant. 
 USER: Hello, I am Ronald Lee.

ASSISTANT: Hello, How best can I abet you the day?

USER: I need to book a fight ticket on 06/20 to participate in sports event. Could you please help me with booking a flight ticket from Phoenix, AZ-PHX?

ASSISTANT: Ok. Sure, When will you return?

USER: I would like to return on 06/22.

ASSISTANT: Where are you heading to?

USER: My destination airport code is Las Vegas, NV-LAS.

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

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

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: We found a Southwest airline, with fare of 100 available on your dates.

USER: You can proceed with booking.

ASSISTANT: Your booking is done with flight 1002.

USER: Thank you for your quick service.

ASSISTANT: Thanks for your presence.