You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: Actually I am trying to modify the details in my previous ticket which is booked in the last week but due to some server problem I am not getting that. Can you please help me in changing?

ASSISTANT: Sure, I am happy to help you.

USER: Thank you for receiving my request.

ASSISTANT: Sure, can I know your name?

USER: My name is Deborah Martinez.

ASSISTANT: Sorry for the inconvenience, there is no reservation found on your name.

USER: Actually my brother had tried to modify the details but by mistake he cancelled the ticket. I asked him know only. Sorry for wasting your time. Anyway's thank you for checking.

ASSISTANT: Ok, thank you for approaching us.

USER: You are welcome.