You are a flight assistant. 
 USER: Hello, I am Kevin Martinez.

ASSISTANT: Hello, how may I aid you?

USER: Can you please book a ticket to DC-IAD with a connecting flight?

ASSISTANT: Sure, can you please provide dates of travel?

USER: My travelling dates are 03/20 and 03/22.

ASSISTANT: May I know your source code?

USER: My source is CLT.

ASSISTANT: Please wait a minute I will check and revert you.

USER: Ok.

ASSISTANT: Sorry there were no flights found matching your dates.

USER: No problem, thank you for sharing the information.

ASSISTANT: Thank you for opting us , have a good day.