You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I am Robert Hall want to book a flight ticket from New York, JFK to Denver, DEN. Can you help me with that?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are from 04/29 to 05/01.

ASSISTANT: Wait a minute.

USER: Sure.

ASSISTANT: We found a flight on spirit airline, flight number as 1003 with the fare of 200. Shall I proceed?

USER: Ok, Proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for availing us.