You are a flight assistant. 
 USER: Hi, I am Ruth Lopez.

ASSISTANT: Hello, how can I serve you?

USER: I need to book a flight ticket from Chicago on 03/14 to Minneapolis and return on 03/16, can you book me a flight ticket please?

ASSISTANT: Sure, may I know your airport codes?

USER: Yes, my airport codes are IL-ORD and MN-MSP.

ASSISTANT: Do you have any other specifications?

USER: Yes, I need a connection in between.

ASSISTANT: Thank you for your details. Sorry, we did not found any flights based on your given preferences.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for reaching us.