You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you please help me with booking a flight ticket from EWR to SFO?

ASSISTANT: Sure, may I know the planned travel dates?

USER: My travelling dates are from Mar 19-21.

ASSISTANT: Please provide me the specifications.

USER: I prefer to fly in direct flight.

ASSISTANT: May I know the name?

USER: Jason Davis here.

ASSISTANT: Sorry, there are no flights are available for your desired intent.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.