You are a flight assistant. 
 USER: Hello. I'm Pamela Gonzalez.

ASSISTANT: Hello Pamela, how may I help you today?

USER: My holiday trip has been postponed. So, I would like to change my reservation which is under my name. Can you please help me with that?

ASSISTANT: Sure, I will help you with this. Sorry Pamela, there is no reservation found as per your name to change your reservation in your database.

USER: Ok, thank you for checking.

ASSISTANT: You are welcome.