You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: My name is Pamela Jones, can you help me to change to reservation which I had done recently?

ASSISTANT: Sure, I am here to help you.

USER: Ok, thank you.

ASSISTANT: Sorry, there is no reservation found on your name in our records.

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

ASSISTANT: Thank your for reaching us.