You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Please assist me in booking a flight ticket from DEN to JFK.

ASSISTANT: Sure, I am happy to help you with the ticket booking. Can I know your travel dates please?

USER: My travel dates are from Dec 21st to Dec 23rd.

ASSISTANT: Ok, please tell me your preference about  the connection limit.

USER: I want a single connection in between my journey.

ASSISTANT: May I know your name please?

USER: I am Emily Gonzalez.

ASSISTANT: Is there any specific timings to depart and return?

USER: Yes, I want to depart in the afternoon.

ASSISTANT: Ok, please give me a minute.

USER: Ok.

ASSISTANT: There is a  flight-1004 which departs at 15:00 hours and returns at 10:00 hours. Can I reserve the ticket?

USER: Yes, please reserve.

ASSISTANT: I have reserved your ticket with the Spirit airlines which costs 200 in an economy class. Have a nice journey.

USER: Thank you.

ASSISTANT: Thank you for choosing us.