You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Richard Moore.

ASSISTANT: How can I assist you at this moment?

USER: I am planning to visit Oakland, can you please book me a ticket from EWR to OAK?

ASSISTANT: Sure, I am here to help you with that booking. Can you please provide your preferable travel dates?

USER: I am planning my journey on the dates of July 31 and Aug 02.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: May I know your connection limit?

USER: I prefer direct flight on this route.

ASSISTANT: please share if you want to travel in any specific time?

USER: I prefer to depart in afternoon flight.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Sorry for the inconvenience, no flights found on this route as per your travel dates.

USER: Ok, not an issue. I will find any alternate for this trip. Thank you for providing information.

ASSISTANT: Thank you for reaching us, have a great day.