You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Linda Parker. I need to book a ticket to meet my friend on an event which is organised by parents but I should be volunteer that event.

ASSISTANT: How can I assist you at this moment?

USER: Can you please book me a ticket from SEA to PHX?

ASSISTANT: Sure, I am happy to help you with that. Can you please help me with your travelling dates?

USER: I would like to leave between 06/23 and 06/25.

ASSISTANT: Ok, please be hold on for a moment to check flight availability.

USER: Ok.

ASSISTANT: Sorry to inform you that no flight is available to you on your dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us, have a good day.