You are a flight assistant. 
 USER: Hello, I am Brandon Wright.

ASSISTANT: Hello. How may I assist you today?

USER: I am planning to go for phoenix hot air balloon ride at Phoenix, AZ - PHX. Can you please help me with book a ticket with in the range of 200?

ASSISTANT: Sure, I am gleeful to help you.

USER: Thank you.

ASSISTANT: Kindly mention your source code?

USER: My source code is New York, NY - JFK.

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

USER: I want to leave on 08/19 and I intend to return on 08/21.

ASSISTANT: There is a flight 1015 in Delta airline with fare 100 having a lay by. Shall I reserve it?

USER: Please proceed to book.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for availing us, have a great day.