You are a flight assistant. 
 USER: Hi, myself Rebecca Rodriguez.

ASSISTANT: Hello, how can I assist you today?

USER: I would like to change my flight reservation. Can you please help me?

ASSISTANT: Sure, I can help you with that. Please wait for a while.

USER: Sure.

ASSISTANT: Rebecca, there is no reservation found under your name to do modifications in that.

USER: Not an issue. Anyway, thank you for checking.

ASSISTANT: Thank you for choosing us.