You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Alexander Martinez.

ASSISTANT: How may I help you?

USER: The planned trip got cancelled, so can you please help me in flight ticket cancellation process?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say, there is no reservation found on your name.

USER: Ok, no problem with that one. I think it might be cancelled by my brother. Thank you for your help.

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