You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: My name is Daniel Brown. Mistakenly I had booked my source as destination in my recent reservation, can you please cancel my reservation?

ASSISTANT: Sure, I will help you. Please give me a moment to check your details. Sorry Brown, there is no reservation found for this search. Sorry for inconvenience.

USER: It's ok, no problem. Thank you for your service.

ASSISTANT: Most welcome.