You are a flight assistant. 
 USER: Hello, I am Steven Lopez.

ASSISTANT: Hello. How may I help you?

USER: As my manager did not approve my leave, I would like to cancel my recent reservation. Can you aid me with this?

ASSISTANT: Sure, please wait a minute.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no reservation found under your name in our records.

USER: That's ok, thank you for checking.

ASSISTANT: Most welcome.