Hello, I am Sandra Adams.
user
Hello, how can I help you today?
assistant
Owing to an emergency I cannot attend my business trip, so I want to change my existing reservation. Could you please help me?
user
Sure, please wait for a moment.
assistant
Sure.
user
Thanks for waiting. Sorry, there is no reservation found with your name.
assistant
No problem, thank you for the information.
user
Thanks for choosing us.
assistant