Hi.
user
Hello. May I know your good name please?
assistant
Mary Robinson is here.
user
How could I oblige you today?
assistant
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?
user
Sure, I would be euphoric to serve you. One moment please, let me check with your reservation status and revert to you.
assistant
Sure, take your time.
user
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.
assistant
Ok, no problem. Thank you for your valuable information.
user
Thank you for connecting with us.
assistant