You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. May I know, How best can I support you today?

USER: Owing to an emergency, I need to cancel my reservation. Can you help me with that?

ASSISTANT: Sure, I can help you in that.

USER: Thank you.

ASSISTANT: To cancel your ticket, we need your name. Can you provide it?

USER: I am Samuel Smith.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry Susan Smith, there is no active reservation on your name to cancel it.

USER: Ok, thanks for the information.

ASSISTANT: Thanks for approaching us.