You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Owing to emergency I want to cancel my reservation, can you help me with that?

ASSISTANT: Sure, we are happy to help you. May I know your good name?

USER: I am Elizabeth Harris.

ASSISTANT: Sorry, we did not find any active reservation on your name in our records.

USER: No problem, thank you for checking.

ASSISTANT: Thank you for availing us.