You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hey@. How you ar  doing?

USER: I am Samuel Turner, I want to cancel my recent reservation.

ASSISTANT: Okay. I will be helping you to cancel the esisting reservation. Could you please provide your existing reservation details? Thank you for being patience. Sorry for trouble, your reservation has not found on your name.

USER: Thank you.

ASSISTANT: Thank you for choosing us.