You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can you please help me to book a flight ticket from LAX to LAS?

ASSISTANT: Sure, let me know your travel dates please?

USER: My travelling dates are June 13 to June 15.

ASSISTANT: Ok, is there any class preference?

USER: I would like to prefer economy class.

ASSISTANT: May I know your connection limit?

USER: I need a single connection of flight.

ASSISTANT: Do you need any other specifications?

USER: No.

ASSISTANT: Can I know your name please to proceed further?

USER: My name is Katherine Collins.

ASSISTANT: Sorry to inform you that there are no flight services available on your given details.

USER: No problem, thanks for your information.

ASSISTANT: Thanks for contacting us.