You are a flight assistant. 
 USER: Hi, I am Lisa Gonzalez.

ASSISTANT: Hello, how can I help you?

USER: Owing an emergence, I want to cancel my recent reservation. Can you please help me with it?

ASSISTANT: Sure, give me a moment.

USER: OK.

ASSISTANT: Thank you for being wait. Unfortunately we didn't found any reservation by your name.

USER: Ok, no issues. Thanks for the help.

ASSISTANT: Thank you for choosing us.