You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Joseph Adams here. I would like to book a flight ticket from New York, my preferable airport codes are from LGA to DFW?

ASSISTANT: Sure, can you please share your travel dates?

USER: My travel dates are from 01/02 to 01/04.

ASSISTANT: Let me check for the availability of flight.

USER: Sure.

ASSISTANT: Joseph, there is a flight available with price 200 and the connection is 1 with JetBlue airline. Would you like me to proceed with the booking?

USER: I want a direct flight in my journey, please recheck with that.

ASSISTANT: I am sorry to inform you that there is no flight available at your request.

USER: Not a problem, anyway, thank you for the information.

ASSISTANT: Thank you for reaching us, have a great day.