You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Frank White.

ASSISTANT: How can I assist you today?

USER: Please book a ticket from DEN to ORD.

ASSISTANT: Sure, will you mention your travelling dates please?

USER: Ok, my planned dates are from 01/15 and 01/17.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is a flight with price 200 and the connections 1 is available. Shall I confirm your ticket?

USER: Proceed with booking.

ASSISTANT: Your ticket is booked. The flight number is 1004 and the airline is Frontier.

USER: Thanks for your help.

ASSISTANT: Welcome, have a great day.