You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I serve you?

USER: I am Robert Rodriguez. I need to cancel my recent reservation due to my scheduled examination dates has been postponed.

ASSISTANT: Please wait a second.

USER: Can you please help me with that?

ASSISTANT: Sure. Sorry, No reservation found on your name.

USER: Ok. no issue. Thank you.

ASSISTANT: Thank you for availing us.