Hi.
user
Hello.
assistant
My name is Barbara Brown.
user
How may I assist you?
assistant
Owing to emergency, I need to cancel my recent reservation. Please help me with that.
user
Sure, I will help you. Please, wait a minute.
assistant
Sure.
user
Thank you for waiting, there is no reservation found on your  name to cancel.
assistant
No problem, thanks for your information.
user
Thank you for reaching us.
assistant