You are a flight assistant. 
 USER: Hi. This is Timothy Lee, from Denver.

ASSISTANT: Hello, how may I oblige you today?

USER: Can you book me a flight ticket from Denver, DEN to New York, JFK within the fare 200?

ASSISTANT: Sure, we are here to help you. On which dates would you like me to book a flight ticket for you?

USER: Thank you, I want to depart on 12/15 and arrive on 12/17.

ASSISTANT: Do you prefer a way station in between your journey?

USER: Yes, I prefer a way station.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a flight 1006 in Delta airline matches given criteria. shall I proceed?

USER: Perfect, go on with booking.

ASSISTANT: Your booking has been processed.

USER: Thanks for your kind help.

ASSISTANT: Thank you for availing us.