You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: My name is Ronald Martin, I want to book a direct flight to Las Vegas for short vacation. Can you book a flight for me?

ASSISTANT: Sure, please provide me your travelling airport codes.

USER: I need a flight from ORD to LAS.

ASSISTANT: Can I know your planning dates?

USER: I will fly on Mar 11 and return on Mar 13.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: There is a flight with the price of 100 and 1 connection limit. Can I proceed with the booking?

USER: Sorry, I need a direct flight for my journey.

ASSISTANT: Sorry, no flights are available with 0 connection.

USER: Thank you for the information.

ASSISTANT: Thank you for reaching us.