You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a flight ticket from CA-OAK to NY-EWR.

ASSISTANT: OK, please share me your travelling dates?

USER: 04/02 and 04/04 are my journey dates.

ASSISTANT: OK, do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: OK, please wait for few minutes, let me check and revert you.

USER: Ok.

ASSISTANT: Sorry there is no flight with your requirements.

USER: No issue. Thank you for your help.

ASSISTANT: Please provide me your name?

USER: I am David Turner.

ASSISTANT: Thank you, for reaching us.