You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you aid me to book my ticket from CLT to JFK?

ASSISTANT: Sure, may I know your travel dates to reserve your flight ticket?

USER: My travel dates are May 2 and May 4 respectively.

ASSISTANT: Can you please share me your good name to proceed next?

USER: Katherine Brown here.

ASSISTANT: Do you have any specifications?

USER: I prefer for single connecting flight and I used to travel in business class flight.

ASSISTANT: Sorry, there is no flight at this moment.

USER: Thank you for assisting me.

ASSISTANT: Thank you so much for communicating us.