You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I help you?

USER: Can you please help me in booking a flight ticket to EWR from OAK?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travel dates are from Aug 14 to Aug 16.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Any other preferences?

USER: No, thanks for asking.

ASSISTANT: May I know your name?

USER: I am David Rodriguez.

ASSISTANT: Sorry, there are no flights found on your data.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.