Hello.
Hello. How can I assist you at this moment?
Could you please help me to update my travelling dates in my existing reservation?
Sure, I am happy to help you with that.
Thank you.
Can I have your good name please to check your reservation status?
I am Dennis Garcia.
Ok, please wait a  moment.
Sure.
Sorry Dennis Garcia, no reservation has found under your name to update your dates.
Ok, not an issue. Thank you for your information.
Thank you for choosing us, have a good day.