Hello, I am Melissa Hall.
user
Hello, how may I assist you?
assistant
I want to do some changes in my existing reservation for me. Can you help me?
user
Sure, may I know your travel dates please? Ok, hold on for a moment. Let me check.
assistant
Take your time.
user
Sorry Hall, there are no flights reserved on your given name.
assistant
No issues. Thank you for checking.
user
Welcome, thank you for choosing us. Have a great day.
assistant
You are welcome.
user