You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Donna Anderson. Owing to an emergency, I want to cancel my recent reservation.

ASSISTANT: Ok. I will help you with that. Please wait for a while, I will check your reservation.

USER: Sure.

ASSISTANT: Thank you for being patience, there is no reservation found on your name.

USER: No problem, thank you for your quick response.

ASSISTANT: Thank you for approaching us.