You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How could I support you today at this moment?

USER: Can you please assist me to change my reservation dates as my meeting was postponed?

ASSISTANT: Can I know your good name please?

USER: I have reserved flight ticket on the name of Jacob Hernandez.

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

USER: Ok.

ASSISTANT: We did not find any active reservation on your given name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for approaching us.