You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me in booking a flight ticket from New York, EWR to reach Oakland, OAK?

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

USER: My journey dates are from Apr 18 to Apr 20.

ASSISTANT: Can you please share your connection limit?

USER: I need a way station in between journey.

ASSISTANT: Do you have any other requirements?

USER: I prefer business class flight.

ASSISTANT: May I know your name please?

USER: My name is Amy Smith.

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

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Thank you for opting us.