You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I be your helping hand today?

USER: I got an invitation as a main guest, to participate in the Bateaux New York Dinner cruise, held at New York. Can you book me a ticket within the range 500?

ASSISTANT: Sure, I will be your helping hand in booking.

USER: Thank you.

ASSISTANT: Help me with your depart and arrival airport codes.

USER: I need to leave from my nearest airport PHX to reach EWR.

ASSISTANT: On which dates you want me to book your ticket?

USER: I want to travel on 08/16, and need to catch return flight on 08/18.

ASSISTANT: On which name I need to book your ticket?

USER: I am Jason Nelson.

ASSISTANT: Ok, please wait a moment to find a flight for you.

USER: Sure.

ASSISTANT: Sorry to say this, no flights will run on that particular location due to tornado alert.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for reaching us.