You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Could you please book me a flight ticket from EWR to OAK?

ASSISTANT: When you are willing to travel?

USER: I will start on Aug 7th and return on Aug 9th.

ASSISTANT: Do you have any connection limit?

USER: I am looking for a direct flight.

ASSISTANT: May, I know your good name?

USER: I am Gary Hill.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: That's alright, thanks for your assistance.

ASSISTANT: Thank you for reaching us.