You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Carolyn Baker here.

ASSISTANT: How can I help you?

USER: I'm a doctor, I have to deal an emergency case at Seattle. Can you please help me in booking the ticket in a non-stop flight?

ASSISTANT: Yes, I can help you. Can you share me your travelling dates?

USER: I would like to depart from here on 05/07 and return by 05/09.

ASSISTANT: Ok, can I know your nearest airport codes?

USER: Sure, my source airport code is ATL and destination airport code is SEA.

ASSISTANT: Give me a moment, I will get back to you.

USER: Sure, ensure that it's a non-stop flight.

ASSISTANT: Sorry to inform you that there are no flights found on your requested route.

USER: So sad! That's ok, thank you anyways.

ASSISTANT: Thank you for contacting us.