You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jason Smith.

ASSISTANT: How may I assist you at this moment?

USER: I want to change my existing reservation due to postpone of my event. Could you please help me?

ASSISTANT: Sure Jason Smith, I am happy to help you to change the ticket details.

USER: Thank you for accepting my request.

ASSISTANT: Ok, please give me a minute. I will check the ticket status and get back to you.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry for the inconvenience, there is no active reservation found with your name in our system data.

USER: No worries, thank you for the information.

ASSISTANT: You are most welcome. Thank you for approaching us.