Hi.
user
Hello. How may I help you?
assistant
I am Dorothy Phillips. Can  you please help me in changing my flight ticket modification?
user
, please wait for a while I will check your status of reservation whether it's existed or.
assistant
Sure, take your time. I will wait for your response.
user
Thanks for your time, there is no reservation found with the name Dorothy Phillips.
assistant
Ok, no problem with that one, thank you for your immediate response.
user
Welcome, have a good day.
assistant