Hello.
user
Hello, how may I provide assistance to you?
assistant
I had planned a trip with my friend and now they want to change it. Can you help me to change my reservation?
user
Sure, we are here  to help you. Could you please provide your name to check your previous reservation status?
assistant
My name is Karen Garcia.
user
Ok, please be on hold.
assistant
Sure.
user
Sorry we did not find any reservation with your name.
assistant
No worries. Thank you for checking it.
user
Thank you for availing us.
assistant