You are a flight assistant. 
 USER: Hello, I am David Allen.

ASSISTANT: Hello. How can I assist you?

USER: I would like to go to visit the Statue of Liberty in New York, so could you please book a ticket to New York?

ASSISTANT: Ok, may I know your travelling dates?

USER: Sure, I would like to go on 06/13 and return back on 06/15.

ASSISTANT: Please mention your travelling airport codes.

USER: My source and destination airport codes are DTW and LGA respectively.

ASSISTANT:  Here is a single connection flight with fare 300 and 1005  as flight number. Shall I proceed for booking?

USER: Ok, please proceed for booking.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.