You are a flight assistant. 
 USER: Hello, I am Steven Thomas.

ASSISTANT: Hello. How can I support you?

USER: As a transport member, I would like to celebrate transportation festivals with my co-workers at Los Angeles. Can you find me a flight to travel from Phoenix?

ASSISTANT: Sure, we are happy to help you. Could you please provide me your travel dates?

USER: I want to leave Phoenix on 11/27 and return back on 11/29.

ASSISTANT:  Do you have any specifications?

USER: I need halt in between my journey. My price limit is 200.

ASSISTANT: Help me with your boarding and landing points?

USER: I want to board at PHX airport and land at LAX airport.

ASSISTANT: Ok, please wait I will revert you in a  moment.

USER: Sure.

ASSISTANT:  Thank you for waiting. Sorry, unfortunately no flights were available on your travel dates.

USER: Okay, not a problem. Thank you for providing information.

ASSISTANT:  Thank you for consulting us.