You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Richard Clark here.

ASSISTANT: How may I help you?

USER: Please help me out in booking the ticket from SEA to EWR.

ASSISTANT: May I know your travelling dates?

USER: My trip dates will be Jan 5 to Jan 7.

ASSISTANT: Give me a moment to check for the flights.

USER: Ok.

ASSISTANT: Sorry to say, there are no flights available for your journey.

USER: That's ok, no issues.

ASSISTANT: Thank you for choosing our services.

USER: Thank you for informing.