You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Is there any help that you are looking from my side?

USER: As I have came to Los Angeles for attending a seminar, but as my seminar got extended I need to stay back here but I have booked a return flight when I have booked to Los Angels. Can you please assist me to cancel my reservation which is done under Jerry Miller?

ASSISTANT: Sure, I am oblige to help you in that one.

USER: Thank you for positive response.

ASSISTANT: Please give me a moment to find your previous reservation in our back end.

USER: Ok, have your time.

ASSISTANT: Sorry, there is no reservation found on the name which you have mentioned for checking in our back end.

USER: It's ok, it might not be done properly at the time of booking. Anyway thank you for checking my reservation which I have mentioned.

ASSISTANT: Thank you for reaching us and have a nice day.