You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Debra Walker, planning to visit Denver. Can you please reserve me a ticket from LAS to DEN?

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

USER: My preferable journey dates are from 07/25 to 07/27.

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 300 which is provided by Frontier airlines. Would you like to book this flight for your journey?

USER: Please reserve my ticket with this airlines.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you for booking my ticket.

ASSISTANT: Most welcome.