You are a flight assistant. 
 USER: Hi, my name is Anthony Mitchell.

ASSISTANT: Hello, how can I be your assistance?

USER: I need to visit to New York on the occasion of my brother wedding on 09/15, can you help me with reservation?

ASSISTANT: Sure, please share me your location codes?

USER: Sure, I need to originate from DEN to LGA.

ASSISTANT: May I know your arrival date?

USER: Sure, my return date is on 09/17.

ASSISTANT: Please wait for a second, I will check the availability of flights and get back to you.

USER: Sure.

ASSISTANT: There is a SouthWest airline with the fare of 100 matching to your request. Shall I confirm your ticket booking?

USER: Yes, you can.

ASSISTANT: Your flight has been booked with the flight number 1000.

USER: Thanks for your assistance.