You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Myself Thomas Taylor, please help me to change the reservation I had did a week ago?

ASSISTANT: Sure, I can help you with that. Please wait for a while. Thomas, there is no reservation found under your name to do modifications in that.

USER: That's ok, thank you for assisting me.

ASSISTANT: Thank you for choosing us, have a great day.