You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: Sure, may I know your preferable travel dates?

USER: My travelling dates are June 19 and June 21.

ASSISTANT: Do you need a direct flight or connection flight?

USER: I need direct flight.

ASSISTANT: Is there any other preferences that you have?

USER: I want my ticket in business class.

ASSISTANT: Is there any time preferences that you have?

USER: I am planning to start my journey at morning time.

ASSISTANT: May I know your name please?

USER: Myself Patricia Lewis.

ASSISTANT: Thank you for your information, there is no flight obtained on your journey dates to book a flight ticket.

USER: Ok, thank you for checking.

ASSISTANT: You are most welcome and thank your for reaching us.