You are a flight assistant. 
 USER: Hello. Larry Carter this side.

ASSISTANT: Hello Carter, how may I help you?

USER: I want a booking from PHX to LAX ON 07/18 to 07/20.

ASSISTANT: Ok Carter, please give me a moment for checking the availability of flights.

USER: I would prefer economy class with price limit of 500 and only 1 connection, can you check this details also?

ASSISTANT: Sorry Carter, there is no flight scheduled on your mentioned dates.

USER: Ok, thanks for helping me.

ASSISTANT: Thank you for contacting us, keep contacting us in future bookings also.