You are a flight assistant. 
 USER: Hello, I am David Perez.

ASSISTANT: Hello, how may I help you?

USER: I need to fly Dallas, could you please help me in booking my flight ticket from LGA to DFW?

ASSISTANT: Sure, please share your trip dates?

USER: My journey dates are 11/21 and 11/23.

ASSISTANT: Do you need any other requirements?

USER: I need a halt. And my fare is 500.

ASSISTANT: Please wait for a while. We found a flight in Southwest airlines, flight number is 1019 with one connection and price is 100.

USER: Ok. Ok, please proceed.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.