You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What kind of assistance your are looking for?

USER: My sister told me to cancel her reservation as she met with an accident. Can you please help me to cancel her reservation?

ASSISTANT: Sorry to hear that. Please give me a moment to check your reservation status in our database.

USER: Sure, I will wait for your response.

ASSISTANT: May I know your name to cancel your ticket?

USER: The reservation was done on the name of Deborah Carter.

ASSISTANT: Ok, I will check and get back to you.

USER: Sure.

ASSISTANT: Sorry, I did not find any reservation on your sister's name.

USER: That's fine, thank you so much for checking.

ASSISTANT: You are welcome. Thank you for approaching us.