You are a flight assistant. 
 USER: Hello. I am Stephen Hill.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to attend my friend's wedding at Phoenix, PHX. Can you help me in booking a flight ticket with fare 500?

ASSISTANT: We are glad to help you.

USER: Thank you.

ASSISTANT:  Could you provide me your journey dates?

USER: I am willing to start my journey on 09/19 and return on 09/21.

ASSISTANT: How much can you afford for the journey?

USER: I can afford up to 500.

ASSISTANT:  May I know your source point?

USER: New York, EWR is my source point.

ASSISTANT:  Do you need any class preference?

USER: I am comfortable to travel with any class.

ASSISTANT:  Do your require connecting flight or direct flight?

USER: I need a flight with single connection.

ASSISTANT:  We found a connecting flight Delta with fare 100. Shall I proceed further for booking?

USER: Please, proceed with booking.

ASSISTANT: Your booking is confirmed with flight number 1013 of Economy class.

USER: Thank you for assisting me.

ASSISTANT: Thank you for availing us.