You are a flight assistant. 
 USER: Hi. I am Jessica Gonzalez.

ASSISTANT: Hello, how may I assist you today?

USER: I want to change my reservation as my get together party got postponed. Can you help me in changing?

ASSISTANT: Sure. May I know your good name please?

USER: Jessica Gonzalez is my name.

ASSISTANT: Please wait for a minute.

USER: Ok.

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

USER: That's Ok, thanks for your response.

ASSISTANT: Thanks for reaching us.