You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Myself Dorothy Rodriguez. I want to change my flight reservation due to some personal issues. Can you please help me?

ASSISTANT: Sure, I am here to help you. Please wait for a moment to check your details.

USER: Sure.

ASSISTANT: Thank you for waiting, no reservation found on your name.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Welcome.