You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I am Stephen Adams. I am looking for a flight from PHX to PHX, can you help me over that?

ASSISTANT: Sure, please provide me your travel dates to search available flight for you.

USER: Ok, my round trip dates are from 09/25 and 09/27.

ASSISTANT: Sorry, I could not find any flight with your travel dates.

USER: It's ok, thanks for your information.

ASSISTANT: It's my pleasure.Have a great day.