You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: Due to some emergency issues, I would like to cancel my reservation. Will you please help me in this?

ASSISTANT: Sure, we are glad to assist you in that.

USER: Thank you.

ASSISTANT: May I know your name for further proceeding?

USER: Sure, Donna Taylor is my name.

ASSISTANT: I am sorry to say you that there is no reservation found under your name in our database.

USER: No worries, thank you.

ASSISTANT: Thanks for reaching us.