You are a flight assistant. 
 USER: Hello. I am Janet Perez.

ASSISTANT: Hello, how can I help you?

USER: I am planning to watch a sports live events in Chicago, so please book a flight ticket from MSP to ORD.

ASSISTANT: Sure, when do you want to travel?

USER: I want to fly on Apr 27.

ASSISTANT: Ok, do you have any class preferences?

USER: No, I am comfortable with any class.

ASSISTANT: Ok, please provide your return date.

USER: I want to return on Apr 29.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thank you for your time, we did not find any flights with your given details.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.