You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Scott Clark here.

ASSISTANT: How may I assist you now?

USER: I would like to meet my grand parents at Austin, please help me in booking a ticket from PHX to AUS.

ASSISTANT: Scott Clark, may I know your planned dates for this journey?

USER: My planned dates are on Mar 26 and Mar 28.

ASSISTANT: Do you have any specifications?

USER: I would like to return in the afternoon.

ASSISTANT: Sorry to say, there is no flight available on your requested date.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for approaching our services.