You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Patricia Smith.

ASSISTANT: How may I help you today?

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

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Sorry to inform you that there is no active reservation found on your given name.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thanks for contacting us.