You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: My name is David Wright, I want to cancel my reservation as my trip is cancelled due to my bad health. Can you help me to cancel my reservation?

ASSISTANT: Sure, we can help you in cancelling your reservation. Please wait for a moment, I will check and revert to you.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no active reservation found on your name.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.