Hello.
user
Hello. How can I help you?
assistant
I am Karen Johnson. Due to sudden change in my trip dates I need to change my reservation. Can you help me changing my existing reservation?
user
Yes, I can help you.
assistant
Thank you.
user
Give me a moment.
assistant
Sure.
user
Sorry to inform you that there is no reservation found on your name.
assistant
No problem.
user
Thank you for consulting us.
assistant
Thank you for the information.
user