You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jonathan King.

ASSISTANT: How may I help you?

USER: As my plan to go for vacation has been postponed, I need to cancel my reservation. Can you help me?

ASSISTANT: Sure, I will help you. Please, wait a minute.

USER: Sure.

ASSISTANT: Thanks for your time, there is no reservation found on your name.

USER: No problem. Thank you.

ASSISTANT: Thank you for reaching us.