You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Can I have your name to check the reservation status?

USER: My name is Helen Moore.

ASSISTANT: Please, wait a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found on your name to change.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you.