You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I want to book a flight ticket from CA to exhibit my paintings in Detroit art gallery, can you please help me to book a flight ticket with single connection?

ASSISTANT: Sure, please provide your trip dates.

USER: Sure, I need to depart on 08/22 and my return date will be on 08/24.

ASSISTANT: Do you need any connection limit?

USER: I have already mentioned above.

ASSISTANT: Do you need any other specifications?

USER: No.

ASSISTANT: Can I know your source code?

USER: I want to start from OAK.

ASSISTANT: May I know your name?

USER: I am Emma Smith.

ASSISTANT: There are no flights available on your routes.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for choosing us.