You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please check for the availability of flights from SEA to ORD for my journey?

ASSISTANT: Sure, may I know your trip dates please?

USER: My journey dates are from Dec 1st to Dec 3rd.

ASSISTANT: Do you have any other requirements?

USER: I need a direct flight with economy class.

ASSISTANT: Ok, let me know your name.

USER: My name is Patricia Taylor. I would like to return in afternoon.

ASSISTANT: Sorry, we regret to inform you that there is no flight available as per your request.

USER: Oh! That's ok. Thank you for checking anyways.

ASSISTANT: My pleasure.

USER: Most welcome.