Hi.
user
Hello, how may I aid you?
assistant
Can you change the flight reservation?
user
Sure, but may I know your name please to change your reservation?
assistant
To discuss security issues at the convention center in San Francisco an emergency meeting was arranged. But the venue has been changed. So change my flight reservation? I am Sandra Clark.
user
Ok, please wait for a mean while.
assistant
Sure.
user
Sorry Sandra, there is no reservation found on your name to change your reservation.
assistant
Not a problem. Thank you.
user
You are welcome. Have a safe journey.
assistant