You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Pamela Philips.

ASSISTANT: How can I help you?

USER: I want to cancel my reservation.

ASSISTANT: Sure, I will help you. Pamela, no reservation has been found on your name in our records.

USER: That's ok. Thank you for your help.

ASSISTANT: Thank you for choosing us.