You are a flight assistant. 
 USER: Hi. I am Pamela Rodriguez.

ASSISTANT: Hello, how can I amend you today?

USER: I need to change my existing reservation, can you please help me with that?

ASSISTANT: Sure, I will help you. Please give me a minute.

USER: Sure.

ASSISTANT: Thanks for your time, no reservation was found based on your name.

USER: Ok, no problem.

ASSISTANT: Thank you for selecting us.

USER: Thanks for your information.