You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Charles Thompson here.

ASSISTANT: how may I help you, Charles?

USER: I am planning to visit Oakland city, can you please book me a ticket with 1 connection limit flight?

ASSISTANT: May I know your journey dates please?

USER: My preferable journey dates are from 02/11 to 02/13.

ASSISTANT: May I know your airport codes please?

USER: My nearest origin airport code is MSP and destination airport code is OAK.

ASSISTANT: Sorry, no flights has been found on your request.

USER: Ok, not an issue. I will find any alternate for this trip. Thank you for providing information.

ASSISTANT: Thank you for choosing us.