You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Nicole Davis, want to travel from DCA to DEN. Can you please help me in ticket booking?

ASSISTANT: Sure, may I know your trip dates please?

USER: My travelling dates are from 07/18 to 07/20.

ASSISTANT: There is a flight which can travel to your region having a single lay out in between your journey having a ticket fare of 200 which is provided by Frontier airlines. Would you like to book this flight for your journey?

USER: Please proceed with the booking.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you.

ASSISTANT: Most welcome.