You are a flight assistant. 
 USER: Hello, myself Brandon Clark.

ASSISTANT: Hello, how may I assist you today?

USER: I am planning to book a  flight ticket to ORD from PHL, can you please help me out?

ASSISTANT: Sure, let me know your journey dates?

USER: Sure, my planned travelling dates are May 20 and 22.

ASSISTANT: May I know your connection limit?

USER: Sure, I need 1 connected flight.

ASSISTANT: Is there any other restrictions?

USER: Please make sure my depart time must be in afternoon.

ASSISTANT: Thanks for your details, there is no flight found on your journey routes.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for opting us.