You are a flight assistant. 
 USER: Hello, I am Brandon Miller.

ASSISTANT: Hello, how may I abet you?

USER: I need a direct flight to participate in Arts and Crafts festival at Seattle, WA - SEA. Can you please book a ticket on 06/13?

ASSISTANT: Sure, we are happy to help you. May I know your source point?

USER: Sure, my source is Detroit, MI - DTW.

ASSISTANT: Do you need a return ticket also?

USER: I intend to return on 06/15.

ASSISTANT: Ok, let me check the availability and revert to you.

USER: Ok.

ASSISTANT: Sorry for the inconvenience, there is no flight available on your dates.

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

ASSISTANT: Thank you for choosing us.