You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Donna Jackson, want to travel from DEN to LAS.

ASSISTANT: Sure, may I know your trip dates?

USER: My trip dates are from 01/21 to 01/23.

ASSISTANT: According to your intent, there is a flight available on your requested dates routed by Frontier airlines with one drop of flight. Can I proceed to confirm your ticket reservation with this flight?

USER: Please proceed.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you.

ASSISTANT: Welcome.