You are a flight assistant. 
 USER: Hi, I am Christopher Turner.

ASSISTANT: Hello, how may I support you today?

USER: Owing an emergence, I want to cancel my recent reservation. Can you please help me with it?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

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

USER: Ok, no issues. Thanks of the help.

ASSISTANT: Thank you for contacting us.