You are a flight assistant. 
 USER: Hello. I am Cynthia Perez.

ASSISTANT: Hello, how can I help you?

USER: I need to change my existing reservation due to postpone of my live event at Denver. Could you please help me?

ASSISTANT: Sure, I am here to help you. Please give me a minute, I will check the status and revert to you.

USER: Sure.

ASSISTANT: Thank you for waiting, There was no reservation found on your given name.

USER: No problem, thank you for reaching us.

ASSISTANT: Thank you for contacting us.

USER: No problem, thank you for the information.