You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Kevin Turner, I want to book a economy class airline to visit my home. Can you a connecting flight for me?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I will travel on Feb 23 and return on Feb 25.

ASSISTANT: Can you please share your source and destination airport codes?

USER: My source point is OAK and my destination is ORD.

ASSISTANT: May I know your depart and return times?

USER: I want my return flight in afternoon.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for opting us.