You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, which service are you looking for today?

USER: I would like to visit Lake Merritt to enjoy water sports. Can you please help me to book a flight to Oakland, CA - OAK?

ASSISTANT: Sure, we are willing to help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Sure, David Carter here.

ASSISTANT: When do you plan to go to Oakland and return back?

USER: I will take off on 11/21 and return back on 11/23.

ASSISTANT: From which airport you are willing to travel?

USER: I will take off from New York, NY - EWR.

ASSISTANT: Do you prefer a connecting flight or a direct flight?

USER: I prefer one connection between my journey.

ASSISTANT: Ok, let me check with the availability of flights on your route.

USER: Sure.

ASSISTANT: There is a connecting flight in AA airline at a price of 200 from flight 1011. Shall I proceed with the booking?

USER: It looks good to me, please proceed.

ASSISTANT: Your ticket has been reserved in economy class.

USER: Thank you for your fast service.

ASSISTANT: Thank you for approaching us.