You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you?

USER: I am Jerry Thomas, I need to cancel my existing reservation due to postpone of my exams.

ASSISTANT: Ok.

USER: Can you please help me?

ASSISTANT: Sure, I will help you. Give me a minute to check the previous reservation with your name.

USER: Sure.

ASSISTANT: Thanks for giving your valuable time. Sorry to inoform you that, there is no reservation found on your name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for availing us.