You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: Can you aid me in booking a flight ticket from CLT to LGA?

ASSISTANT: Sure, may I know your travelling dates, please?

USER: Sure, I would like to go on May 18th and return back on May 20th.

ASSISTANT: Do you have any class preference?

USER: Any class is fine for me.

ASSISTANT: Can I know your connection limit?

USER: Make sure it is a single connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No, I don't have any specifications.

ASSISTANT: Sorry for the inconvenience, there are no flight found on this route as per your travel dates.

USER: That's ok, thank you for checking the availability.

ASSISTANT: Most welcome, thank you for reaching us. Have a great day.

USER: Welcome.

ASSISTANT: May I know your name for documentation purpose?

USER: Myself Joshua Clark.

ASSISTANT: Thank you for giving the information, have a great day.