You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Sure, please share your planned travel dates?

USER: My travelling dates are from Sept 23 to Sept 25.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight only.

ASSISTANT: Any other preferences?

USER: No.

ASSISTANT: Can I have your name please?

USER: My name is Betty Jackson.

ASSISTANT: Sorry, no flights found with your given details.

USER: Ok, No issues, thanks for the information.

ASSISTANT: Thank you for opting us.