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

ASSISTANT: Hello, how may I serve you today?

USER: Can you aid me in booking a flight ticket from ORD to PHL?

ASSISTANT: Sure, may I know your dates of journey?

USER: I am planning to start on October 1st and return back on October 3rd.

ASSISTANT: Do you have any requirements?

USER: I want to travel in direct flight.

ASSISTANT: Ok, please wait for a while.

USER: Take your time.

ASSISTANT: Sorry, there were no flights found with your requirements.

USER: No issues. Thank you for checking.