You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to book a flight ticket from LAS to ORD to meet my friends.

ASSISTANT: Sure, can you please help me with your name?

USER: I am Carolyn Rodriguez.

ASSISTANT: Thank you. May I know your travel dates?

USER: My travelling dates are Feb 20 and Feb 22.

ASSISTANT: Noted. Do you prefer for a direct flight or a connecting flight?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Sure, please wait for a while. Let me check.

USER: I want to depart in the afternoon.

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

USER: No worries, thank you for the information.

ASSISTANT: You are welcome and thank you for choosing us.