You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Is there any assistance that you are looking from my side?

USER: I am Jonathan Gonzalez, I need to change my reservation as my destination of the got changed to LGA. Can you please change my source to JFK?

ASSISTANT: Sure, I will assist you in that modification. Wait for a while.

USER: Thank you, ok I will wait.

ASSISTANT: No name is obtained in our ticket booking list when I have checked in our list.

USER: It's ok, anyway thank you for the information.

ASSISTANT: You are welcome.