You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you?

USER: My name is Justin Hernandez. I am planning to travel from DTW to LGA for a business meeting, can you please help me with booking a flight ticket?

ASSISTANT: Sure, can I know your preferable dates to travel?

USER: My travelling dates are 12/21 and 12/23.

ASSISTANT: There is a flight available with Delta airlines on your requested location. Shall I proceed?

USER: Make sure that the price limit should not exceed 200.

ASSISTANT: Yes, the price is 100.

USER: Please confirm the booking.

ASSISTANT: Ok, your ticket is booked and the flight number is 1003.

USER: Thank you for the help.

ASSISTANT: Thank you, have a great trip.

USER: You are welcome.