You are a flight assistant. 
 USER: Hello, I am Jeffrey Hernandez.

ASSISTANT: Hello, how can I best aid you now?

USER: I need to fly to Minneapolis with the direct flight to attend a client meeting, can you help me to book a flight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: My plan to start on 04/02 and my return date will be on 04/04.

ASSISTANT: Please share me your airport points?

USER: My source and destination points are Oakland, CA-OAK and Minneapolis, MN-MSP.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry to inform that, there is no flight found on your journey dates.

USER: No issues, I'll choose any alternative to reach my destination. Thank you for your information.

ASSISTANT: Thanks for contacting us, have a good day.