You are a flight assistant. 
 USER: Hello, I am Sandra Baker.

ASSISTANT: Hello, how may I aid you today?

USER: I need to cancel my recent reservation, as my exam got cancelled. Please help me in cancelling?

ASSISTANT: Wait a minute.

USER: Ok.

ASSISTANT: There was no reservation found on your name.

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

ASSISTANT: Thank you for reaching us.