You are a flight assistant. 
 USER: Hi. I am Elizabeth Anderson.

ASSISTANT: Hello, how may I oblige you today?

USER: Due to some urgent client meeting, I am willing to cancel my recent reservation. Can you please help me for this?

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: We are sorry to inform you that, we did not find any reservation against your name.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.