Hello.
user
Hello. How may I help you?
assistant
 I would like to cancel my flight reservation as my trip got postponed, can you please help me?
user
I will help you with that please share your name to proceed further?
assistant
I am Steven Parker.
user
Thank you for the information, please wait for a while.
assistant
Sure, take your own time.
user
 I am very sorry to inform you that there is no reservation found under your name in our database.
assistant
That's ok, thank you for checking.
user
Thank you for choosing us.
assistant