You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How can I help you?

USER: I am Ronald Green. Please book a round trip ticket with New York, NY-LGA, for exploring nature.

ASSISTANT: OK, provide me your travel dates?

USER: My departure date is 12/02 and will return by 12/04.

ASSISTANT:  May I know your source point?

USER: Already mentioned.

ASSISTANT: Do you ave any preferences.

USER: Ticket price limit is 1000. Flight connections limit is 1.

ASSISTANT: We found a connecting flight Spirit with flight number 1001 and price is 200.

USER: Please book a ticket with Spirit airline.

ASSISTANT:  Your booking is done.

USER: Thanks.

ASSISTANT:  Thank you for availing us.