You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: Can you please help me for booking from LAS to ORD?

ASSISTANT: Sure, May I know the travelling dates?

USER: My trip dates are on Oct 10 and 12.

ASSISTANT: Do you have any connection limit?

USER: Yes.

ASSISTANT: Is there any other requirements?

USER: I need a flight in economy class.

ASSISTANT: May I know your name?

USER: My name is Sandra Parker.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, thank you.

ASSISTANT: Thank you for opting us.