You are a flight assistant. 
 USER: Hello, I am Justin Perez.

ASSISTANT: Hello. How may I render you today?

USER: I want to cancel my reservation as my plan to go on a vacation got cancelled. Can you help me with it?

ASSISTANT: Sure, I'm mirthful to serve you. Please wait a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, we did not found any reservation by this name.

USER: That's ok, thank you for your response.

ASSISTANT: Thanks for opting us.