Hello.
user
Hello. How may I help you?
assistant
Can you help me with that change my existing reservation?
user
Sure, may I know your name?
assistant
My name is Karen Green.
user
Please wait for a moment to check your details.
assistant
Sure.
user
Sorry to say, no reservation found on your name.
assistant
No issues, thank you for the checking.
user
Thank you for your time.
assistant