You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you at this moment?

USER: Can you help me booking a flight ticket from JFK to LGA?

ASSISTANT: Sure, I am happy to help you with that. Can I have your travel dates please?

USER: I will start on 05/10 and return on 05/12.

ASSISTANT: Ok, please let me know the timings of your journey.

USER: I am comfortable with any flight.

ASSISTANT: Do you prefer any special class to travel?

USER: I am looking for economy class flight.

ASSISTANT: Are you ok with connecting flight or direct flight only you want?

USER: I need a break in my journey.

ASSISTANT: Can I have your good name please to proceed further?

USER: I am David Lewis.

ASSISTANT: Ok, please be on hold for a moment to check flight availability in your route. Sorry David Lewis, no flight is available to you on your dates due to some weather conditions.

USER: Ok, no problem. Thanks for the information.

ASSISTANT: Thank you for choosing us, have a good day.