You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you the best today?

USER: Owing to have an emergency, I need your assistance to cancel my reservation.

ASSISTANT: Sure, I can provide you the assistance.

USER: Ok.

ASSISTANT: May I know your name to find your reservation?

USER: My name is Mary Allen.

ASSISTANT: Sorry, we did not find any active reservation on your name.

USER: No worries at all. Thank you for your response.

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