You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I want to change my recent reservation. Can you help me out?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: I am Linda Edwards.

ASSISTANT: I am sorry to inform that there is no reservation found under your name.

USER: That's ok. Anyways, thank you.

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