Hi, my name is Angela Williams.
Hello. How may I guide you?
Actually on my business trip I need to go to Oakland, could you please book a ticket for me?
Yes, can I know your name?
Already I provided my name , but, again I am providing my name , I am Angela Williams.
Can I know your airport codes?
Sure, the airport codes are from LAX to  OAK.
Please provide me the travel dates?
Sure, my preferable dates are 07/24 and return on 07/26.
Do you have any additional requirements?
Yes, the ticket budget may not increase 5000 and connection must be 0.
I'm sorry Angela, there are no flights matching your preferences.
It's OK, thank you for providing me the information.
Thank you, have a good day.