You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Amanda White.

ASSISTANT:  How can I assist you?

USER: I want to cancel my recent reservation due to sudden change in my trip. Can you help me?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait I will revert you.

USER: Ok.

ASSISTANT:  Sorry, no reservation was found on your name.

USER: That's fine. Thank you for your response.

ASSISTANT:  Thank you for opting us.