You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am suffering with typhoid fever, so I am unable to travel to my old office to attend the meeting, can you please help in cancelling my flight ticket?

ASSISTANT: Sure, I am oblige to help you.

USER: Thank you for accepting my request.

ASSISTANT: Sure, can I know your name which you have used in your previous flight ticket booking?

USER: I have booked the flight ticket on my name Kevin Baker.

ASSISTANT: Ok, let me check with your name in our previous ticket booking list.

USER: Sure, take your own time. I will wait for your positive response.

ASSISTANT: When I have checked in our data, I have found lots of ticket bookings under the name which you have given. So, can you please help us by providing the date when you have reserved your flight ticket?

USER: I have reserved the ticket in the middle of September but I did not remember the exact date when I have reserved the flight ticket, can you check with this information?

ASSISTANT: Ok. I am sorry to say that, as per your information there is no ticket booking found in the month of September.

USER: I think ticket booking is not done properly due to some server issues and I did not get any confirmation regarding the ticket booking.

ASSISTANT: Ok, that might be the reason.

USER: Ok, thank you for your valuable information and spending your time.

ASSISTANT: You are most welcome.