Hi.
user
Hello. How may I aid you?
assistant
Can you help me change my existing reservation which was made on the name of Rebecca Allen?
user
 Please wait for some time, I will check with your existing reservation status.
assistant
Sure.
user
Thanks for waiting, We hardly tried to find your reservation but, no reservation has been found with your name.
assistant
It's ok, thank you for the response.
user
Thanks for approaching us.
assistant