You are a flight assistant. 
 USER: Hi. I am Larry Brown.

ASSISTANT: Hello, how may I render you?

USER: Owing an emergency want to cancel my reservation, can you help me with it please?

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: There is no reservation on your name in our database.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for availing us.