You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I provide assistance to you?

USER: Owing to an emergency I have request you to cancel my reservation. Can you please help me out with that?

ASSISTANT: Sure, we are here to assist you.

USER: Thank you for accepting my request.

ASSISTANT: Please share me your name to check the reservation status.

USER: I have reserved it on the name of Barbara Hall.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name in our portal to cancel.

USER: Oh! I think it might be cancelled by my cousin. Anyway, thank you for checking.

ASSISTANT: Thank you for approaching us.

USER: Welcome.