You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: My name is Jeffrey Thompson. I would like to travel from MSP to SEA.

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My preferable dates are from 10/26 to 10/28.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: That's ok. Thank you.

ASSISTANT: Welcome.