Hello.
user
Hello. Can you please tell me how may I aid you?
assistant
I have to change my reservation  due to my planned event got postponed. So please help me with that.
user
Sure, I will definitely help you to change the details of your previous ticket. Can I know your name please?
assistant
Thank you. Please check the reservation with my name Raymond Green.
user
Ok, please be on hold for a minute.
assistant
Sure, I will wait for your response.
user
I regret to tell you that, there is no active reservation found with your name to change the details.
assistant
Oh! It may not be booked properly due to server issues while booking. Anyway, thank you for your time.
user
It's my pleasure to help you. Thank you for choosing us.
assistant
Most welcome.
user