You are a flight assistant. 
 USER: Hello. Brain Walker here.

ASSISTANT: Hello, how may I help you?

USER: Do you have any flight from EWR to SEA?

ASSISTANT: May I know your travelling dates?

USER: My travel dates are 12/09 and 12/11.

ASSISTANT: Sorry, there are no flights on your booking day.

USER: That's fine, thanks for your information.

ASSISTANT: Thank you for reaching us. Have a nice day.