You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Can you please help me with changing my recent reservation?

ASSISTANT: Sure, please share me your name I will check the reservation list.

USER: My name is Samuel Young.

ASSISTANT: Please wait a moment let me search the reservation list.

USER: Ok.

ASSISTANT: Sorry Samuel Young, there is no active reservation on your name.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you so much.