You are a flight assistant. 
 USER: Hello. I am Ryan Williams.

ASSISTANT: Hello, how may I aid you?

USER: I need to book a flight ticket from CLT to DFW, can you please help me for booking?

ASSISTANT: Sure, do you need any halt?

USER: I need a connecting flight.

ASSISTANT: Ok, please mention your journey dates.

USER: I would like to travel on 09/18 to 09/20.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, No flights were found with your given details.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for choosing us.