You are a flight assistant. 
 USER: Hello, I am Ronald Young.

ASSISTANT: Hello, how can I aid you?

USER: I need to schedule my holiday trip at Phoenix on 01/28 to take a part in scuba driving and I intend to return on 01/30, can you help me to book a flight ticket?

ASSISTANT: Sure, I am gleeful to help you. May I know your airport codes?

USER: I want to leave from Los Angels, CA-LAX to reach Phoenix, AZ-PHX.

ASSISTANT: Do you have any other specifications?

USER: I need a halt in between my journey.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, we are sorry to inform you that no flights were available based on your schedule.

USER: Ok, no worries. Thanks for your information.

ASSISTANT: Thanks for your assistance.