You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Could you please book a flight ticket from OAK to CLT?

ASSISTANT: Sure, may I know the travelling dates?

USER: My trip dates are Oct 24 and Oct 26.

ASSISTANT: Do you have any connection limits?

USER: I need a single connecting flight.

ASSISTANT: Is there any other requirement?

USER: I want to depart in the evening.

ASSISTANT: May I know your name?

USER: I am Joseph Nelson.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, no flights found with your preferable dates.

USER: Not a problem, thank you.

ASSISTANT: Thank you for availing us.