Hi.
user
Hello, how may I address you?
assistant
I would like to change my flight reservation, can you please help me?
user
Sure, will you please let me know your name?
assistant
My name is Gary Hill.
user
Please give me a moment.
assistant
Sure.
user
There is no reservation found with your given name.
assistant
No problem, thank you for checking.
user
Thank you for choosing us.
assistant