You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I help you today?

USER: I'm Patrick Wilson. I am planning to travel from SFO to SEA to attend a convocation party, can you please help me with booking a flight ticket?

ASSISTANT: Sure, can I know your travelling dates?

USER: Sure, I would like to take off  on 03/27 and return back from Seattle on 03/29.

ASSISTANT: Sorry Wilson, no flight's available on your details.

USER: Ok, no issue I will search for another way to complete my trip.

ASSISTANT: Thank you for contacting us.

USER: Thank you for checking.