You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you avail me to book a flight from Denver to meet my childhood friends in New York?

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travel dates?

USER: My travel dates are Apr 21 and 23.

ASSISTANT: Ok, please share your name.

USER: Frank Hernandez here.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Ok, may I know your travelling airport codes?

USER: My airport codes are DEN and LGA.

ASSISTANT: Do you have any specifications?

USER: I intend to catch my return flight in the afternoon time.

ASSISTANT: Here, I found a flight for you with 1 stopover in economy class and it costs you 200. Can I proceed?

USER: Please proceed.

ASSISTANT: Your booking is done with flight 1019 in Frontier airlines, the flights departs in evening and return in afternoon.

USER: Thanks for your kind service.

ASSISTANT: Thank you for choosing us, have a safe flight.