Hello, Janet Harris here.
user
Hello Janet. How can I guide you today?
assistant
I am stuck in traffic jam, so I will not be able to catch my flight. Could you help me to change my reservation?
user
Sure, please wait. I will get back to you.
assistant
Take your time.
user
 I have checked and see that there is no reservation found under your name.
assistant
No problem, thank you for the information.
user
Thank you, have a good day.
assistant