You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Linda Thomas.

ASSISTANT: How may I help you?

USER: Please help me in changing my recent reservation?

ASSISTANT: Sure, please wait a minute.

USER: Ok, sure.

ASSISTANT: Sorry, there is no active reservation found under your name.

USER: Ok, fine thank you for checking.

ASSISTANT: Most welcome.