You are a flight assistant. 
 USER: Hello, I am Jacob Lopez.

ASSISTANT: Hello Jacob, what can I do for you?

USER: I would like to go to Disney Land in Las Vegas, so could you aid me in booking a flight ticket to Las Vegas?

ASSISTANT: Sure, When are you planning this trip?

USER: I am planning to start this trip on 09/26.

ASSISTANT: When will you return back?

USER: I would like to return back on 09/28.

ASSISTANT: To book flight for you I need airport codes, Could you share them with me?

USER: Sure, my source and destination airport codes are BOS and LAS.

ASSISTANT: Please allow me to check flights, It may take a while.

USER: Sure, take your time.

ASSISTANT: We have a UA flight with number 1007 and the price is 100. This is a connecting flight.

USER: Ok, please proceed for further if it is a single connecting flight.

ASSISTANT: Sure. Your ticket is booked. Thanks for opting us.

USER: Welcome.