You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Barbara Carter.

ASSISTANT: Carter, how may I help you?

USER: I want to visit Denver Zoo, s can you please check for the flights from DEN for my round trip?

ASSISTANT: Sure, please provide your trip dates.

USER: My journey will start on 04/21 and my returning date is 04/23.

ASSISTANT: Please wait for a while.

USER: Please check for a flight with 1 stopover between my journey.

ASSISTANT: Frontier airlines with flight 1002 is providing service with a connecting flight.

USER: That's ok for me, you can book it.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for confirming my reservation.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.