Hello, I am Timothy Baker.
user
Hello, how may I assist you?
assistant
Can you do some changes in my dates of previous reservation?
user
Sure, hold on for a moment. Let me check.
assistant
Sure.
user
Sorry Baker, there are no flights reserved on your given name.
assistant
That's ok, thank you for checking.
user
Welcome, thank you for choosing us.
assistant
Welcome.
user