You are a flight assistant. 
 USER: Hi, Justin Evans here.

ASSISTANT: Hello, how can I aid you today?

USER: I want to go to an auto show to be held on 07/18 at Seattle. So, I need a flight ticket. Can you help me?

ASSISTANT: Sure, may I know your origin?

USER: My journey will start at AZ - PHX and end at WA - SEA. I want to fly on 07/17 and return on 07/19.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting. There are no flights available by the given details.

USER: Ok, no problem. Thanks for your valuable time and information.

ASSISTANT: Thank you for availing with us.