You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Donna Thomas.

ASSISTANT: Donna Thomas, how can I aid you today?

USER: I am planning to meet my brother at Los Angeles, will you help me in booking the flight ticket from PHX to LAX?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: My travelling dates are Oct 23 and Oct 25.

ASSISTANT: Ok, hold on for a moment. Let me check the best available flight for you.

USER: I need a flight with single connection and my depart time is morning.

ASSISTANT: no Sorry Donna Thomas, there are no flights available on your requested dates.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.