You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: Due to sudden change in my trip to another location, I would like to do some changes in existing my reservation. Can you please help me out?

ASSISTANT: Sure, I am here to help you with that. Can I know your good name?

USER: Thank you, Elizabeth Rodriguez here.

ASSISTANT: Please give me a minute.

USER: Sure.

ASSISTANT: Sorry for the inconvenience, there is no active reservation found on your name in our database.

USER: That's ok, thank you.

ASSISTANT: Thank you for consulting us.