You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am John Gonzalez. I want to travel from MSP to PHL. Can you book a flight ticket for me?

ASSISTANT: Sure, can I know your preferable dates?

USER: I want to travel in the flight on 12/09 and 12/11.

ASSISTANT: I found a flight 1001 of Delta airlines matches with your preferences, can I proceed?

USER: Proceed to booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you, have a good day.