You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER:  I am Patricia walker want to travel to CA-OAK to meet my sister from MN-MSP. Can you book a connecting flight?

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

USER:  My planned dates are 02/01 and 02/03.

ASSISTANT: Sorry to say that, no connecting flights were found with your given details.

USER: Ok, thank your response.

ASSISTANT: Thank you for opting us.