You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I aid you?

USER: Could you please help me to cancel my recent reservation as my plan to meet my grand parents got postpone?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know your name?

USER: My name is Joshua Lopez.

ASSISTANT: Please wait a moment.

USER: Sure.

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

USER: No problem, thank you.

ASSISTANT: Thank you.