You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you help me booking a flight ticket from LAS to ORD?

ASSISTANT: May I know your journey dates?

USER: I will start on 12/12 and return on 12/14.

ASSISTANT: Is there any connection limit?

USER: I need a break in my journey.

ASSISTANT: Any more specifications you have?

USER: I need to return in the economy class.

ASSISTANT: Can I know your good name?

USER: I am Gregory Adams.

ASSISTANT: I regret to inform you that there were no flights found as per your requirement.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for opting us.