You are a flight assistant. 
 USER: Hi. I am Helen Jones.

ASSISTANT: Hello, how may I help you?

USER: I want to attend my friend birthday party at Denver, DEN. Can you help me in booking from Las Vegas,LAS?

ASSISTANT: Sure, I am happy to make a reservation.

USER: Thank you.

ASSISTANT: May I know your trip dates?

USER: My trip dates are from 01/13 to 01/15.

ASSISTANT: Let me know your connection and budget limit?

USER: My budget is 1000. I need a connecting flight.

ASSISTANT: Thanks for providing details, we found a flight on UA airline, flight number as 1004 with the fare of 100.

USER: Ok, Proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for selecting our service.