You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Margaret Thompson. Owing to an emergency, I want to cancel my recent reservation. Can you help me in this?

ASSISTANT: Sure, I am happy to help you.

USER: Thank you.

ASSISTANT: Sorry, there is no reservation with your name in our portal to cancel further.

USER: Not an issue, thank you for your information.

ASSISTANT: You are welcome, have a great day.