You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I want to cancel my recent reservation because my exam has been cancelled.

ASSISTANT: Ok, May I know your name?

USER: I am Raymond Smith.

ASSISTANT: Unfortunately, There is no reservation found with your name.

USER: Ok, no issue. Thanks for your kind response.

ASSISTANT: Thanks for contacting us.