Hello.
user
Hello.
assistant
I am Thomas Brown.
user
How may I help you?
assistant
Owing to an emergency, I just want to change my existing reservation. Can you please help me to change it?
user
Sure, please wait for a while.
assistant
Sure.
user
Sorry, no reservation is available by your name.
assistant
Ok, thanks for your help.
user
Thank you for choosing us.
assistant