Hi.
Hello. May I know your good name please?
Mary Robinson is here.
How could I oblige you today?
As I am a science lecturer and I would like to visit one of the best museum in Houston,  but due to an emergency work my planned has been postponed.So I would like to change my existing reservation. Would it be possible to change my existing reservation?
Sure, I would be euphoric to serve you. One moment please, let me check with your reservation status and revert to you.
Sure, take your time.
Thanks for being patient. I have checked in the reservation list to change your ticket, but could not find any reservation with your provided name.
Ok, no problem. Thank you for your valuable information.
Thank you for connecting with us.