You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, welcome to flight booking agency.

USER: Frank Johnson here.

ASSISTANT: How can I assist you today?

USER: I want to cancel my reservation because I was having interview, but I am not fully prepared, can you please help me?

ASSISTANT: Sure, I can help you with that. Please allow me a moment to check for the previous reservation.

USER: Sure, take your own time.

ASSISTANT: Your patience is greatly appreciated. Frank, there is no reservation found under your name.

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

ASSISTANT: You are welcome. Thank you for contacting us.

USER: Most welcome.