You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I would like to cancel my recent reservation. Please help me out.

ASSISTANT: Sure, please wait for a minute. May I know your name please?

USER: Sure, my name is Sandra Williams.

ASSISTANT: Sandra, there is no reservation found with your details.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for contacting us.