You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Stephanie Adams. Can you please book a ticket from ORD to LAX?

ASSISTANT: Sure, May I know your trip dates?

USER: My travelling dates are on Nov 27 and Nov 29.

ASSISTANT: Do you need any halt in your journey?

USER: I need a single connection.

ASSISTANT: Is there any class preference for you?

USER: I need a economy class.

ASSISTANT: Sorry to inform you that, there are no flights available with your requirements.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for opting us.