You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Frank Campbell. I am planning to visit a Central park in New York. Can you please book a ticket for me?

ASSISTANT: Ok Frank, I will help you out in booking the ticket. Can you please provide me your travelling dates?

USER: I want to travel on 07/21 and return on 07/23.

ASSISTANT: May I know your travelling airport codes?

USER: My nearest airport code is MI-DTW and destination code is NY-LGA.

ASSISTANT: Ok, please wait a moment I will check for availability of flights.

USER: OK.

ASSISTANT: Thank you for your patience. There is a flight with flight number 1009, can I proceed with this flight?

USER: May I know the price?

ASSISTANT: Price of the flight is 100.

USER: Please proceed the booking.

ASSISTANT: Ok, your ticket has been booked. Have a nice journey.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing our services.