You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Gary Jackson. Can you help me in booking my flight ticket from Sep 13th to Sep 15th?

ASSISTANT: Sure, could you please provide your travelling airport codes to search for the flight?

USER: My airport codes will be CLT to OAK.

ASSISTANT: May I know your preferable depart and return journey timings?

USER: My return time should be in the afternoon.

ASSISTANT: Do you have any requirements?

USER: I need a stopover flight.

ASSISTANT: There is no flights were available for you on your route. Sorry for inconvenience.

USER: Its ok, thank you.

ASSISTANT: Thank you for reaching us.