You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Nicole Martin.

ASSISTANT: How may I assist you?

USER: Please help me in changing my recent reservation.

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please wait a moment I will check the reservation list.

USER: Sure.

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

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you.