Hello.
user
Hello, how can I help you?
assistant
 I would like to change my flight reservation as my trip got postponed, can you please help me?
user
Sure, we are here to help you.
assistant
Thank you.
user
On whose name, the reservation has been made earlier?
assistant
My name is Ryan Moore.
user
Please wait for a while.
assistant
Ok, take your own time.
user
Thanks for your time, we are regret to inform you that, there is no active reservation found in your name.
assistant
Not an issue, thank you for the information.
user
Thank you for availing us.
assistant