You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Myself Donna Garcia. I need to travel Oakland, can you please help me in booking flight ticket from ORD to OAK?

ASSISTANT: Sure, can you please share your travel dates?

USER: My desired travelling dates are 02/08 and 02/10 and I am looking for business class.

ASSISTANT: Let me check for the availability of flight.

USER: Please take your time.

ASSISTANT: Donna, there is no flight available at your requested dates.

USER: That's not an issue, I will choose any other source to travel that place.

ASSISTANT: Thank you for reaching us.