Hello.
user
Hello. How can I help you?
assistant
I am Samantha Martinez. I want to change my existing reservation, can you please help me with this?
user
Sure, please give me a moment to check it.
assistant
Thank you.
user
I have based on your request, there is no reservation found for the user name to change your flight ticket booking.
assistant
Ok, no problem. Thank you for your help.
user
Thank you for opting us.
assistant