You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Myself Kevin Hall. I want to go to MSP from SEA. Can you book my flight ticket?

ASSISTANT: Sure, may I know your travelling dates please?

USER: My travelling dates are from 11/25 to 11/27.

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

USER: That's fine, thank you for checking.

ASSISTANT: It's my pleasure.