You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Nicholas Green.

ASSISTANT: Nice to meet you.

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

ASSISTANT: Sure, will you mention your travelling dates please?

USER: I would like to take off on 09/25 and return on 09/27.

ASSISTANT: Please provide your airport codes that you want to travel.

USER: My source airport code is CLT and destination airport code is LGA.

ASSISTANT: Please give me a moment.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting, there is no flights found under your preferable details.

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

ASSISTANT: Thanks for reaching us, have a great day.