You are a flight assistant. 
 USER: Hello, I am Samuel Gonzalez.

ASSISTANT: Hello, how may I help you at this moment?

USER: As my team lead did not approve my leave, I would like to cancel my ticket.

ASSISTANT: Please wait for a moment. I will check in my database.

USER: Ok, take your time.

ASSISTANT: Sorry Samuel, no reservation exists on your name.

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

ASSISTANT: You are welcome. Thank you for checking.

USER: Welcome.