You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: Can you please check the availability of flights from CLT to OAK?

ASSISTANT: Sure, may I know your travelling dates?

USER: My trip dates are on Oct 30 and return on Nov 01.

ASSISTANT: Do you have any connection limit?

USER: I need a connected flight.

ASSISTANT: Any other preferences?

USER: My return time is evening in economy class.

ASSISTANT: May I know your name?

USER: Jerry Green here.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, thanks for your service.

ASSISTANT: Thank you.