You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Patrick Wright.

ASSISTANT: How can I help you now?

USER: As my sister's marriage has been postponed, I need to cancel my reservation.

ASSISTANT: Ok.

USER: Can you please help me?

ASSISTANT: Sure, wait a while.

USER: Sure.

ASSISTANT: Thanks for waiting. No reservation was found on your name.

USER: No problem. Thank you.

ASSISTANT: Thank you for reaching us.