You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: Can you please aid me to change my recent reservation as my business meeting is cancelled?

ASSISTANT: Sure, I am glad to help you with that. Can you please provide your name to check your previous reservation?

USER: Sure, myself Frank Smith.

ASSISTANT: Please be on hold.

USER: Sure, I will wait.

ASSISTANT: We are regret to inform you that, there is no active reservation on your name in our records.

USER: No worries. Anyway thank you for checking.

ASSISTANT: Thank you for reaching us, hope you have a great day.