You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Patrick Lewis. I am planning to attend music concert at MSP, can you please help me with booking a flight ticket from PHX?

ASSISTANT: Sure, let me know your travelling dates.

USER: Sure, I would like to depart on May 25 and return on May 27.

ASSISTANT: Please share your specifications.

USER: Make sure that the price limit does not exceed 200.

ASSISTANT: We found a flight with single connection and price is 400. Shall I proceed?

USER: Please don't proceed. Thank you for checking.

ASSISTANT: O. Ok. Thank you.

USER: You are welcome.