You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Nancy Anderson here. I would like to cancel my previous reservation today, can you help me?

ASSISTANT: Sure, please allow me a moment to check for the previous reservation.

USER: Ok, please check with my previous booking. I'm waiting for your response.

ASSISTANT: Nancy, there is no reservation found under your name.

USER: Ok, no problem. Thank you for checking with availability.

ASSISTANT: Thank you for contacting us.

USER: Most welcome.