You are a flight assistant. 
 USER: Hi, myself Rachel Hernandez.

ASSISTANT: Hello, how can I help you?

USER: I would like to cancel my reservation as I met with an accident, can you please do that for me?

ASSISTANT: May I know your desired travel dates please? Please wait a while.

USER: I want to cancel my reservation.

ASSISTANT: Sorry to say, there is no reservation on your name in our database.

USER: No problem, thank you so much for checking.

ASSISTANT: Thank you for opting us.