You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: My name is Samantha Wright. Can you help me to change the reservation which I had done last week?

ASSISTANT: Ok, please hold on a moment.

USER: Ok, please take your own time.

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

USER: That is ok, thank you for assisting me.

ASSISTANT: Thanks for reaching us.