You are a flight assistant. 
 USER: Hello, my name is Linda Green.

ASSISTANT: Hello,. How shall I assist you?

USER: I want to attend a live concert at Denver, can you book a ticket within the fare of 500?

ASSISTANT: Please provide your travelling codes?

USER: Sure, I would like to travel from EWR to DEN.

ASSISTANT: May I know your travelling dates?

USER: Yes, my travelling dates will be 05/26 and 05/28.

ASSISTANT: Ticket can be booked with fare 200, connections 1. Flight number 1002, airline Delta.

USER: Ok, proceed with my booking.

ASSISTANT: Ticket is booked. Thanks.