You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I render you?

USER: My name is Patricia Roberts. I would like to visit Monterrey Car Week show, going to be held at Charlotte, NC - CLT. Could you please help me with booking a flight with a flag stop?

ASSISTANT: Sure. May I know your travelling dates?

USER: Yes, I need to reserve my ticket on 09/18 and 09/20.

ASSISTANT: Let me know your source code.

USER: I will depart from ATL.

ASSISTANT: Thanks for your details. There is no flights found on your data.

USER: No problem, thank you for your information.

ASSISTANT: Thank you.