You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to book a flight ticket from CLT to JFK for attending a seminar.

ASSISTANT: Sure, I will help you. May I know your name?

USER: I am Elizabeth White.

ASSISTANT: Thank you. Please let me know your travel dates.

USER: My travelling dates are Apr 22 and Apr 24.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Sure, please wait for a while.

USER: Sure.

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

USER: No worries, thank you for the information.

ASSISTANT: You are most welcome.