You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Can you help me in changing my recent reservation?

ASSISTANT: Sure, we are gleeful to help you.

USER: Thank you.

ASSISTANT: Please provide your good name to check in the reservation list.

USER: I made my reservation with the name Gary Thompson.

ASSISTANT: Sorry, there is no active reservation on your name in our data.

USER: Its ok, thank you.

ASSISTANT: Thank you for contacting us.