You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: I already have an reservation to attend a meeting, due to some problems meeting place has been changed. So I need a few changes in my reservation. Can you please help me with this?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Can I know your name to check the reservation?

USER: My name is Jonathan Martinez.

ASSISTANT: Please wait a minute, I will check your reservation status and get back to you.

USER: Sure.

ASSISTANT: Sorry to say that there is no reservation found on your name.

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

ASSISTANT: Thank you for availing us.