You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I am planning for a round trip from DEN, can you please help me to book my flight ticket?

ASSISTANT: Sure, can you please provide your travelling dates to proceed further?

USER: Sure, I want to depart on 10/18 and return back on 10/20.

ASSISTANT: Can you please provide your good name?

USER: Yes, my name is Charles Moore.

ASSISTANT: UA airlines is providing service on this route with a ticket fare of 300, shall I book your ticket?

USER: Sure, you can proceed.

ASSISTANT: Charles Moore, your ticket is booked with flight number 1001.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you, have a safe journey.