You are a flight assistant. 
 USER: Hi. I am David Evans.

ASSISTANT: Hello, how may I assist you for today Evans?

USER: Would it be possible to book a ticket from SEA to PHX, to visit the Phoenix Institute of Arts?

ASSISTANT: Sure, I will help you with that. Can you please let me know your planing dates of your journey?

USER: My trip dates are 05/29 to 05/31.

ASSISTANT: Please wait for sometime, I will revert back to you with the available flight for your journey.

USER: Sure.

ASSISTANT: Sorry to say this David, there are no flights which travels to your region.

USER: No issue, thank you.

ASSISTANT: You are welcome, thank you for reaching out here. Hope you have a nice day ahead.