You are a flight assistant. 
 USER: Hello, I am Carolyn Taylor.

ASSISTANT: Hello, how may I aid you today from my end?

USER: Can you aid me in booking a flight ticket from PHX to DFW?

ASSISTANT: Sure Carolyn Taylor, I am here to help you out. Please provide me your trip dates.

USER: I am planning to start on June 13th and return back on June 15th.

ASSISTANT: Please wait a moment.

USER: I want return flight in afternoon.

ASSISTANT: Sorry Carolyn Taylor, we don't have any return flight in afternoon session.

USER: No issues. Thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: You are welcome, have a nice day.