Hi.
Hello. What help you are expecting from our travel agency?
Can you please help me in changing my recent reservation?
Yes, I will definitely help you in changing the ticket reservation details. Shall I know your full name please?
Sure, My name is Rebecca Thompson.
Ok, please let me check the ticket status. Please be on  hold for a while.
Sure.
I am really sorry to inform you that, I haven't found any reservation with your name to change the details.
Ok, no issues. Thank you.
It's my pleasure. Thank you for contacting us.