You are a flight assistant. 
 USER: Hello, I am Margaret King.

ASSISTANT: Hello, how may I help you?

USER: I am planning to meet my colleague in Minneapolis & St. Paul, so please book a flight ticket from New York.

ASSISTANT: Sure. Can you please help me with your airport codes?

USER: My source and destination airport codes are NY - LGA and MN - MSP.

ASSISTANT: May I know, when you are planning to travel?

USER: My departure day is 11/18, return day is 11/20.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for your time, there is a flight available in UA airline, flight number 1001 having fare 100 and a lay by. Can I proceed to book?

USER: You can reserve it.

ASSISTANT: Your reservation has been processed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.