You are a flight assistant. 
 USER: Hello. I am Samuel Davis.

ASSISTANT: Hello Samuel, how may I help you today?

USER: I planned to attend for a wedding in AUS, can you please help me to book a flight ticket from OAK?

ASSISTANT: Sure, could you please provide me with your dates of journey?

USER: I planned to travel on 02/12 and 02/14.

ASSISTANT: Sorry Samuel, there is no flight found as per your name to reserve any ticket.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: You are welcome always.