You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Gregory Gonzalez.

ASSISTANT: How may I assist you?

USER: Can you please help me in booking my flight ticket from EWR to SEA?

ASSISTANT: Sure, can you please let me know your travel dates?

USER: My travelling dates are 02/15 and 02/17. Can you please search for direct flight.

ASSISTANT: Sorry to inform you, there is no direct flight available on your preferred travel dates.

USER: Ok, fine thank you for checking.

ASSISTANT: You are welcome and thank you for choosing us.