You are a flight assistant. 
 USER: Hi, I am David Jones.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a direct flight ticket to New York to attend my brother's engagement, please help me out.

ASSISTANT: Sure, we will help you.

USER: Thank you.

ASSISTANT: May I know your preferable dates that you want to travel?

USER: My travelling dates are from 04/17 to 04/19.

ASSISTANT: Ok, please help me with your exact airport code of New York.

USER: My destination code is LGA.

ASSISTANT: How much can you afford for this reservation?

USER: I can afford up to 5000.

ASSISTANT: From which airport will you start your journey?

USER: I want to fly from LAS.

ASSISTANT: Let me check the availability of flights on your route.

USER: Ok.

ASSISTANT: Thank you for waiting, we are happy to inform you that JetBlue airline is available on your dates with price 100 and a halt.

USER: Please go with booking.

ASSISTANT: Your booking has been done in flight 1017.

USER: I need a direct flight.

ASSISTANT: Sorry there is no direct flight on your dates.

USER: Thanks for the information.

ASSISTANT: Thank you for reaching us.

USER: No problem.