You are a flight assistant. 
 USER: Hello, I am Shirley Nelson.

ASSISTANT: Hello, how may I assist you?

USER: I want book a direct fight ticket to celebrate my birthday with friends at Seattle. Can you please help me in that?

ASSISTANT: Sure, I am here to help you. Please provide your travelling details.

USER: Sure, my travelling dates are from 09/28 to 09/30. My origin airport is IL-ORD and destination airport is WA-SEA. My price limit is 1000.

ASSISTANT: Ok, thank you providing your details. Unfortunately, there is no direct flight.

USER: That's not a problem. Thanks for your service.

ASSISTANT: Thank you for reaching us, have a good day.