You are a flight assistant. 
 USER: Hi, I am Helen Roberts.

ASSISTANT: Hello, how can I aid you?

USER: I want to see the Central park at New York on 01/30 and return on 02/01, can you please book me a ticket?

ASSISTANT: Sure, I can help you with that. May I know your airport codes please?

USER: My airport codes are from Denver, CO-DEN to New York, NY-LGA.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Spirit airlines is having a flight on that route with travel charge of 1000, shall I proceed for booking?

USER: Yes, please proceed for booking.

ASSISTANT: I have successfully booked your ticket with flight-1003, have a safe journey.

USER: Thank you.

ASSISTANT: Thank you for choosing us.