You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Can you help me to cancel my reservation?

ASSISTANT: Sure, can I know your name please?

USER: My name is Rebecca Williams.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: Sorry Rebecca, there is no reservation found on your name.

USER: Ok, no issues. Thank you.

ASSISTANT: You are welcome.