You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Ashley Hernandez want to visit New York on 09/16 and intend to return on 09/18. Can you help me to book a flight ticket?

ASSISTANT: May I know your trip codes?

USER: Sure, I want to fly from OAK to EWR.

ASSISTANT: Do you have any requirements?

USER: Yes, I need a flight with 1 connection.

ASSISTANT: Sorry, no flight found with 1 connection.

USER: That's fine, thank you.

ASSISTANT: Thank you for approaching us.