Hi. My name is Mark Clark.
user
Hello. Nice to meet you Mark. How should I help you now?
assistant
I want to change my existing reservation, can you please help me with that?
user
Sure Mark, I will help you wiith that. Please wait a minute.
assistant
Sure.
user
Thank you for waiting. Sorry Mark, no reservation has found with your name.
assistant
It's ok, thank you for your response.
user
Thank you for reaching us. Have a good day.
assistant