You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you at this moment?

USER: I am Charles Robinson here. I have planned to attend my friend marriage due to some issues I want to cancel my recent reservation, can you please help me?

ASSISTANT: Sure, I will help you with that. Please wait a moment to check your previous reservation.

USER: Ok, I will wait for your response.

ASSISTANT: There is no previous reservation available in your name.

USER: Ok, no problem. Thanks you for your service.

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