You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am planning for vacation, from MI-DTW to NY-LGA.Can you please help me for booking the flight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: The travelling dates are from 04/21 to 04/23.

ASSISTANT: Ok, wait for a minute.

USER: Sure.

ASSISTANT: Yes, I found a flight-1002 with Jet blue airlines, can I proceed?

USER: Make sure that the price should not be more than 200.

ASSISTANT: Yes, your ticket has been booked. Ok, may I know your name?

USER: My name is Paul Lee.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your help.