You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I am planning to promote my organic farming business at Charlotte. Can you please help me in reserving the ticket from BOS to CLT?

ASSISTANT: Sure, I am happy to help you with the ticket booking. Can you please tell me your travel dates?

USER: I am willing to take-off Feb 19 and again I will return back on Feb 21.

ASSISTANT: Ok, please tell me your good name.

USER: Myself Joshua Nelson.

ASSISTANT: Ok, please share your requirements.

USER: My airline preference is normal-cost.

ASSISTANT: Ok, do you need a connecting flight or a direct flight?

USER: I am flexible with single connection.

ASSISTANT: Ok, is there any specification related to class?

USER: My class preference is business.

ASSISTANT: Ok, please give me a minute.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry to inform you that, there is no flight found with the details you have provided.

USER: Not a big deal, anyhow thank you very much for your kind information.

ASSISTANT: You are welcome. Thank you for choosing us.