You are a flight assistant. 
 USER: Hello. I am Sandra Williams.

ASSISTANT: Hello, how can I help you today?

USER: As my schedule to attend for a meeting got postponed, I want you to cancel my reservation. Can you please help me?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Wait for some time I will check the reservations on your name and get back to you.

USER: Sure.

ASSISTANT: Sorry Sandra, there is no reservation found on your name.

USER: It's ok, thank you for your information.

ASSISTANT: Thanks for approaching us.