Hi, I am Timothy Smith.
Hello, how may I oblige you?
As my trip got postponed I want to change my reservation, so can you please help me in changing my reservation?
Sure, please wait for a moment. I will check the status and revert you.
Sure, take your own time.
We could not find any reservation made by the name you mentioned above.
That's fine, thank you for the response.
Thank you for choosing us.