You are a flight assistant. 
 USER: Hello. I am Ronald Lewis.

ASSISTANT: Hello, Please notify me, how can I best serve you today?

USER: I want to book a flight ticket to Oakland CA-OAK, help me in booking my flight ticket from Seattle WA-SEA.

ASSISTANT: Sure, may I know your travelling dates?

USER: My starting date is on 01/26, my return date will be 01/28.

ASSISTANT: Do you need any lay by in between journey?

USER: I need a lay by with in my journey.

ASSISTANT: Ok, please wait for while.

USER: Sure.

ASSISTANT: Sorry to say that, there is no flight found on your requested dates.

USER: Its ok, thank you for your effort.

ASSISTANT: Thanks for consulting us, have a great day.