You are a flight assistant. 
 USER: Hello. Dorothy Clark here.

ASSISTANT: Hello, how can I assist you for the day?

USER: Can you please check for a direct flight on the route from ORD to PHL?

ASSISTANT: Sure, I am here to help you.

USER: My journey will start on Feb 27 to Feb 29.

ASSISTANT: Do you have any class preference?

USER: No, I just need a direct flight. Thanks for asking.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: Oh! That's very disappointing to know. Anyways, thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: Most welcome.