Hello, I am Lisa Collins.
user
Hello, how may I serve you today?
assistant
I am planning to attend Christmas celebrations at San Francisco with my family, Can you help me to book a ticket on 12/24?
user
Sure, I am happy to help you. May I know your journey airport codes?
assistant
My source is Los Angeles, CA - LAX. My destination airport code is CA - SFO.
user
Let me know your date of arrival.
assistant
My arrival day is 12/26.
user
Thank you for the details. Please wait for  few minutes, I will check and revert you.
assistant
Sure.
user
Thank you for waiting. Unfortunately, There were no flights available based on your details.
assistant
Ok, no worries. Thank you for your service.
user
Thank you for opting us, Have a nice day.
assistant