You are a flight assistant. 
 USER: Hello, Jason Smith is my name.

ASSISTANT: Hello, Jason Smith. How can I support you today?

USER: My seminar has been postponed so, I want to change my existing reservation. Can you assist me with this?

ASSISTANT: Sure, we are here to assist you. Please standby, I will check the status and revert you.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for your time, we are sorry to say that no reservation has found based on your name.

USER: Ok, Thank you for providing information.

ASSISTANT: Thanks for contacting us.