You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: I am looking for a single connecting flight for my holiday trip to Oakland. So can you book the flight ticket?

ASSISTANT: Sure, I am here to help you with that.

USER: Ok.

ASSISTANT: Can you please share your travelling dates?

USER: The travel dates are from May 10 to May 12.

ASSISTANT: May I know your preferable airport codes, please?

USER: My airport codes are from MSP to OAK.

ASSISTANT: Do you have any class preference?

USER: No, you can search for the flight.

ASSISTANT: May I know your connection limit?

USER: Single connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Can I know your name please to proceed for further?

USER: I am Karen Lee.

ASSISTANT: Sorry to say that, there are no flights found on this route as per your details.

USER: Not a problem.

ASSISTANT: Thank you for reaching us, have a great day.

USER: Thank you.