You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I just want to cancel my recent reservation, as my friend is not able to join me for this trip. Can you help me?

ASSISTANT: Sure, to cancel your reservation I have to check your details, can you please provide your name?

USER: Sure, myself Andrew Hall.

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

USER: Ok, maybe my friend had already cancelled my ticket and forgot to inform me about it.

ASSISTANT: Is there anything else I can help you with?

USER: No, thanks for asking. Anyway, thank you for checking.

ASSISTANT: Thank you and have a nice day.

USER: Most welcome.