Hello.
user
Hello. How can I assist you?
assistant
I have to change my travelling dates in  my previous reservation due to my leaves got shifted to another  dates. So please help me with that.
user
Sure, can I know your name please?
assistant
Thank you. Please check my reservation with my name Raymond King.
user
Sorry, there is no reservation found on your name.
assistant
Oh! It may not be booked properly due to server issues while booking. Anyway, thank you for your time.
user
Thank you for approaching us.
assistant
Most welcome.
user