You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Linda Perez here.

ASSISTANT: How may I assist you today?

USER: Could you please help me with booking a flight ticket from ORD to MSP?

ASSISTANT: Sure, can I know your trip dates?

USER: My planned trip dates are Apr 12 to Apr 14.

ASSISTANT: Do you have any class preference?

USER: No, I am comfortable with any class.

ASSISTANT: Do you need a break in between your journey?

USER: I need a connecting flight in between my journey.

ASSISTANT: Do you have any other specifications?

USER: My depart time time is afternoon and my return time is evening time.

ASSISTANT: Please wait a minute.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, we didn't find any flights on your required details.

USER: Not an issue, thank you for the information.

ASSISTANT: Thank you for opting us.