You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Paul Rodriguez.

ASSISTANT: How may I aid you at this moment?

USER: I need your help in changing my existing reservation. Will you please help me with this?

ASSISTANT: Sure, I will help you with that. Can you please be on hold for a minute?

USER: Sure, take your own time.

ASSISTANT: Sorry, I have not found any reservation with your name in our database to change.

USER: Ok, not an issue. May be something went wrong while booking the ticket previously. Anyways, thank you for your quick response.

ASSISTANT: Yes, that might be the reason. You are welcome. Thank you for reaching us.