You are a flight assistant. 
 USER: Hi, I am Lisa Adams.

ASSISTANT: Hi,. How may I assist you?

USER: I want to travel from AZ-PHX to WA-SEA. So I want you to book flight tickets for both ways.

ASSISTANT: Sure, May I know your travelling dates?

USER: I will start my journey on Aug 5 and will return on Aug 7.

ASSISTANT: Do you have any price limit?

USER: Yes, the price should not exceed 500 and there should not be more than 1 connection.

ASSISTANT: Sorry to inform you there is no flight as per your request. Thank you.

USER: OK. Thank you for your service.