You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Stephanie Baker. I want to change my travel dates in my previous reservation so can you please help me with that?

ASSISTANT: Just a moment please.

USER: Ok, thank you for your response.

ASSISTANT: I am sorry no reservation found on your name.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Thank you for choosing us.