You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I aid you?

USER: I am Jonathan Smith. I made a reservation earlier to meet my friend but, unfortunately he travelled to another place. So I need to change my reservation. Can you please help me out?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait a moment, I will check your details and revert to you with the current status.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry to inform you that there is no active reservation found on your name to proceed further.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for choosing us.