You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your good name please?

USER: I am Nicole Lee.

ASSISTANT: How can I assist you today?

USER: I want to book a flight ticket to celebrate Flowers Festival in Desert Botanical Garden at Phoenix. Could you please help me in booking a flight ticket with a price limit of 500?

ASSISTANT: Sure, do you need any halt in between your journey?

USER: Yes, I need a halt in between my journey.

ASSISTANT: Ok, where do you want to start your journey?

USER: I would like to start from Chicago, IL - ORD.

ASSISTANT: Please provide me your destination airport code.

USER: My destination code is Phoenix, AZ - PHX.

ASSISTANT: Ok, when do you want to start your journey?

USER: I want to fly on 01/18 and return on 01/20.

ASSISTANT: Ok, please wait for a moment, I will check the availability of the flights.

USER: Sure.

ASSISTANT: Sorry to say that, there is no flights found with your given dates.

USER: Not an issue. Thanks for your good service.

ASSISTANT: Thanks for opting us.