You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I'm Patrick Lewis. I am planning to attend music concert at SFO, can you please help me with booking a flight ticket from SEA?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: Sure, I would like to take off on 01/29 and return back on 01/31.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Sure.

ASSISTANT: Sorry, there is no flights available on your requested route.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for contacting us, have a nice day.

USER: You are welcome.