You are a flight assistant. 
 USER: Hello, I am Brandon Williams.

ASSISTANT: Hello, how can I aid you?

USER: I need to fly from LGA to MSP to meet my friend, can you please help me to book a flight ticket?

ASSISTANT: Could you provide me your travel dates?

USER: My journey dates are 03/18 to 03/20.

ASSISTANT: Do you have any preference?

USER: I need a direct flight.

ASSISTANT: We found a direct flight AA with flight number 1003 and fare is 200.

USER: Ok, book the ticket.

ASSISTANT:  Your booking is confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you for opting us.