You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello!. How may I assist you?

USER: I am Kevin Green. I need to travel from Washington DC-IAD to Denver CO-DEN.

ASSISTANT: OK. Could you please provide me your travelling dates?

USER: My planning dates are depart on 01/17 returning on 01/19.

ASSISTANT: Give me some time to check the availability.

USER: OK.

ASSISTANT: I found a flight for you that matches your requirements.

USER: Share the flight details.

ASSISTANT: Flight number is 1028,price is 100.

USER: Proceed with the booking.

ASSISTANT: Wait for a while for reserving your ticket. Thank you for your patience. Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for choosing our service.