You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I support you today?

USER: Due to some issues, I am not able to complete my trip. Can you please help me in changing my recent reservation?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: May I know your name to track your details?

USER: Gregory Moore here.

ASSISTANT: Thanks for your name, please wait.

USER: Sure.

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

USER: Ok, no problem. Anyway thank you for checking out.

ASSISTANT: Thank you for choosing us.