You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you at this moment?

USER: Can you please help me in booking a connecting flight for my trip to Charlotte in October month from Dallas?

ASSISTANT: Sure, due to need a lay by in between the journey?

USER: I have already mentioned you that I need a connecting flight.

ASSISTANT: Can you please share your source and destination airport codes?

USER: My source and destination airport codes are DFW and CLT respectively.

ASSISTANT: On which dates would you like to depart and return?

USER: My depart and return dates are Oct 01 and Oct 03 respectively.

ASSISTANT: May I know your good name please?

USER: Yes, my name is Susan Allen.

ASSISTANT: Do you have any other preferences?

USER: I need an economy class flight which return in the afternoon to my location.

ASSISTANT: There are no flights found on your requested dates.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for availing us.