You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Please help me to book a flight ticket from BOS to OAK?

ASSISTANT: Yes, can you share me your dates of travel?

USER: My travelling dates are Jan 16 to Jan 18.

ASSISTANT: Do you have any other specifications?

USER: I need a direct flight.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flights found on your requested criteria.

USER: Ok, no problem, for your back end process please take my name as I am Richard Lewis here.

ASSISTANT: Can I know your name? Thank you for reaching us.