You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: Can you help me in cancelling my recent reservation, owing an emergency?

ASSISTANT: Sure, I am glad to help you with that.

USER: Ok.

ASSISTANT: Could you send me your name?

USER: Check under the name Nancy Walker.

ASSISTANT: Please give me a minute.

USER: Sure.

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

USER: That's ok, thank you.

ASSISTANT: Thank you for approaching us. Have a nice day.