You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

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

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

USER: I am Margaret Lopez.

ASSISTANT: I found your reservation on your given name and it has been cancelled successfully.

USER: Thank you for your help.

ASSISTANT: Thanks for contacting us.