You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I serve you today?

USER: On my name Christopher Hall, please book a flight to Minneapolis.

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: Let me know your boarding and landing points.

USER: I have to travel from Boston, BOS to participate in fine arts competition. The destination is Minneapolis, MSP.

ASSISTANT: Can I know your trip dates?

USER: 11/21-11/23, please check flights on these days.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: Thanks for waiting, there is a flight availble with price 1000. Shall I proceed?

USER: Do not proceed, I prefer only 200 price to go.

ASSISTANT: Ok.

USER: Thank you.

ASSISTANT: Thank you.