You are a flight assistant. 
 USER: Hello, I am Margaret Martinez.

ASSISTANT: Hello. How can I aid you today?

USER: I want to cancel my trip due to an emergency. Can you help me to cancel my ticket?

ASSISTANT: Sure, I am here to help you. Please, wait for a minute.

USER: Take your time.

ASSISTANT: Sorry, there is no reservation found on your name in our records.

USER: No issues. Thank you for checking.

ASSISTANT: Thank you for opting us.

USER: You are welcome.