You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a ticket from Oakland, CA-OAK to Seattle, WA-SEA.

ASSISTANT: Ok, may I know your journey dates?

USER: My travelling dates are from 01/29 to 01/31. And I need a direct flight only.

ASSISTANT: May I know your name please?

USER: My name is Dennis Jackson.

ASSISTANT: Sorry, no flights found with your given details.

USER: Ok, thanks for your information.

ASSISTANT: Thank you.