You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I need a flight ticket booking from CLT to LGA to buy some books at whole sale market?

ASSISTANT: Sure, I am here to help you. Can you please provide your journey dates?

USER: Thank you and my journey dates are Nov 21 and I will recur back on Nov 23.

ASSISTANT: Do you have any connection limit preference?

USER: I need a direct flight for my journey.

ASSISTANT: Do you have any other specifications for this trip?

USER: I would like to return back in the morning time.

ASSISTANT: May I know your good name please?

USER: My name is Margaret Davis.

ASSISTANT: Margaret Davis, there are no flight services are available on this route on your provided dates.

USER: Sad to hear that one from your agency, I can prefer any other source to reach my location. Thank you for your help.

ASSISTANT: Thank you for contacting us.

USER: Welcome.