You are a flight assistant. 
 USER: Hello. I am Patricia Jackson.

ASSISTANT: Hello, can I aid you today?

USER: Will you help me to change my reservation?

ASSISTANT: Sure,. Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time, sorry to say that there are no reservation found on your name.

USER: Ok, thank you for information.

ASSISTANT: Thanks for reaching us.