Hi.
user
Hello, How can I serve you today?
assistant
My name is Raymond Parker and i want to book a flight ticket to Oakland, CA - OAK to spend my holidays with my parents.
user
May I know the source point and travelling dates?
assistant
I would like to start on 12/28 from Los Angeles, CA - LAX and end on 12/30.
user
Sorry for the late. No flight found as per your details.
assistant
OK, thanks for your response.
user
 Thank you for approaching us.
assistant