You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you now?

USER: I am Jacob Anderson. I need to change my existing reservation. Can you please help me?

ASSISTANT: Sure, I will help you with this. Please wait a minute. Thank you for waiting, there is no reservation matches with the given name.

USER: Thank you for the information.

ASSISTANT: Thank you for connecting with us.