You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Daniel Robinson.

ASSISTANT: How may I assist you today?

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

ASSISTANT: Sure, I will be helping you out, can you please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there are no active reservations to cancel.

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

ASSISTANT: Thank you for reaching our service.