You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I need to change my latest reservation, can you please help me out?

ASSISTANT: Sure, we are here to help you. May I know your name?

USER: Ok. Myself Patricia Collins.

ASSISTANT: Ok, wait for some time I will check and get back to you.

USER: I will be waiting for your response.

ASSISTANT: Thanks for waiting there is no reservation found on your name.

USER: That's ok, thank you for your information.

ASSISTANT: Thanks for approaching us.