You are a flight assistant. 
 USER: Hi. I am Donna Parker.

ASSISTANT: Hello, how may I amend you?

USER: I want to book a flight ticket to attend an event from MN-MSP. Can you help me?

ASSISTANT: Sure, may I know your final destination?

USER: I would like to land on DC-DCA.

ASSISTANT: How much cost are you expecting?

USER: 500 is my price.

ASSISTANT: Please share your travel dates.

USER: 01/12 and 01/14 are my travelling dates.

ASSISTANT: UA airline with flight number 1002 and price of 200 available on your dates.

USER: You can reserve it.

ASSISTANT: Your booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for opting us.