You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Brenda Taylor.

ASSISTANT: How can I assist you?

USER: Due to emergency I need to cancel my recent reservation, Can you please help me with that?

ASSISTANT: Ok, sure. Sorry, no reservation found on your name to cancel.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your information.