You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

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

ASSISTANT: Sure, Please wait a second.

USER: Ok, thank you.

ASSISTANT: Sorry, No reservation found on your name.

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

ASSISTANT: Thank you for availing us.