You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I address you?

USER: I need an economy class flight ticket to Phoenix, PHX under 500 fare. Can you help me in this?

ASSISTANT: Sure, may I know your travelling dates?

USER: Ok, my travelling dates are 01/14 and 01/16.

ASSISTANT: Please provide your source and destination codes.

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

ASSISTANT: Can you please provide your name?

USER: Sure, my name is Gary Mitchell.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: We found a flight with number 1004 and Spirit as airline. The cost of the ticket is 100.

USER: Ok, you can proceed to book.

ASSISTANT: Your booking is done with a connecting flight.

USER: Thank you for your quality service.

ASSISTANT: Thank you for availing us.