You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How may I assist you?

USER: I want to book a flight ticket to Phoenix with price under 200. Can you help me with it?

ASSISTANT: Ok. Please provide me travelling airport codes.

USER: Travelling airport codes are SFO-PHX.

ASSISTANT: May I know your travel dates?

USER: Travel dates are 06/25 and 06/27.

ASSISTANT: Please provide your name.

USER: My name is James Davis.

ASSISTANT: No flights found with your requirement.

USER: Ok, no issues.

ASSISTANT: Thanks.

USER: Thanks for the help.