You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you at this moment?

USER: Timothy Young here. Can you please be my helping hand in changing my existing reservation?

ASSISTANT: Sure, I am here to help you with this.

USER: Thank you.

ASSISTANT: Can you please provide your name to check your reservation status?

USER: Already mentioned above.

ASSISTANT: Timothy Young, there is no active reservation found under your name in our database.

USER: No problem, thank you for passing the information.

ASSISTANT: Thank you for contacting us.