You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Michael Smith. I am planning to visit Central Park at New York, could you please help me with booking a flight ticket?

ASSISTANT: Sure may I now your travel dates?

USER: I would like to take off on 07/29 and return on 07/31.

ASSISTANT: Please help me with your airport codes?

USER: My source airport code is DFW and destination airport code is JFK.

ASSISTANT: Sorry, there is no flight found basis on your details.

USER: That's ok, I will find an another alternate way to complete my trip. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us.