Hello.
user
Hello. How can I aid you today?
assistant
I am Charles Harris, want a flight with low fare of 200, as my existing reservation fare is 5000, can you help me to change my reservation?
user
Sure, please wait for a while.
assistant
Sure.
user
Sorry Charles Harris, no reservation found on your name.
assistant
No worries, thank you for the information.
user
Thank you for approaching us.
assistant