You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help  you?

USER: I am Patricia Young. I am looking for a direct flight, could you please help me with that?

ASSISTANT: Sure, I am happy to help you. Can you please mention your travelling dates?

USER: I would like to take off on 10/18 and return on 10/20.

ASSISTANT: What are the source and destination airport codes?

USER: My nearest source airport code is JFK and destination airport code is OAK.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there are no flights having a connection limit 0 in this route.

USER: That's ok, no issues. Thank you for the information.

ASSISTANT: Thank you for reaching us. Have a nice day.