You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Carolyn Adams here.

ASSISTANT: How can I help you?

USER: Due to sudden change in my trip to another location, I would like to cancel my reservation. Can you please help me out?

ASSISTANT: Sure, just give a second please.

USER: Sure, take your time.

ASSISTANT: I am sorry no reservation found on your name.

USER: Oh, I think my cousin had cancelled my reservation. Anyway, thank you for the information.

ASSISTANT: Thank you for choosing us.