You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to book a flight ticket from SEA to EWR for attending a event. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, may I know your itinerary dates?

USER: My travelling dates are Aug 21 and Aug 23.

ASSISTANT: May I know your name?

USER: I am Jerry Wright.

ASSISTANT: Sorry Jerry Wright, no flights are available on your route.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for reaching us.