You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Sarah Carter here.

ASSISTANT: Carter, how can I guide you?

USER: Can you please help me in booking a ticket from ORD to MSP? as I need to attend my graduation ceremony.

ASSISTANT: Please provide me your trip dates.

USER: My travel dates are 11/20 and 11/22.

ASSISTANT: Hold on for a moment.

USER: Sure, please search for a direct flight.

ASSISTANT: Sorry, no direct flight is available for you.

USER: That's ok, thank you for your service.

ASSISTANT: You are welcome.