You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I am Joshua Anderson. Can you please reserve me a flight ticket from Chicago, IL - ORD to reach Las Vegas, NV - LAS?

ASSISTANT: Sure, can you share your journey dates?

USER: My trip dates are 11/15 - 11/17.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Sorry, there is no connecting flight on your given dates.

USER: Please do not proceed. Thank you for your information.

ASSISTANT: Ok, thank you for reaching us.