You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Barbara Williams.

ASSISTANT: In which way I can assist you today?

USER: In the last month I have reserved a flight ticket on my name to travel to San Francisco to celebrate my father birthday but suddenly there is an examination on the same date and our college management has informed suddenly to us. So I am unable to travel the trip which I was planned. Can you please help me in changing my flight ticket booking?

ASSISTANT: Sure, I am gleeful to help you with that.

USER: Thank you for accepting my request.

ASSISTANT: Give me sometime to check your name in our previous reservation list in our database and I will get back with the related information.

USER: Ok, I will wait for your response and provide the related information as soon as possible.

ASSISTANT: Thank you for waiting. When I have checked the reservation list, there are so many names found in our database which you have mentioned for checking. Could you please let me know your exact date when you have reserved your flight ticket?

USER: I could not remember the exact date but I can provide you the month when I have done my reservation.

ASSISTANT: Ok, in which month you have reserved your flight ticket?

USER: Sure, I have done the reservation in the month of September. So, you can check with that one.

ASSISTANT: As per your information, I have rechecked the reservation status but I am unable to find your reservation in the month which you have provided under your name.

USER: Ok, no issues with that one. I think due to some technical issues in server, my flight ticket booking has not confirmed.

ASSISTANT: Yes, it might happened sometimes.

USER: Anyways, thank you for your immediate help in providing your information.

ASSISTANT: Thank you for contacting us, hope you have a great day.

USER: You are welcome.