Hi.
user
Hello. How may I serve you at this moment?
assistant
Could you please help me to update my travelling dates in my existing reservation?
user
Sure, I am here to help you.
assistant
Thank you.
user
Can I know your good name  to check with your existing reservation status?
assistant
I made a reservation by this name Nancy Phillips.
user
OK,please wait for some time.
assistant
Sure.
user
There is no existing reservation found on your name in our data base.
assistant
Ok, not an issue. Thank you for your information.
user
Thank you for reaching us.
assistant