You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Nicholas Davis.

ASSISTANT: How can I assist you?

USER: Owing to emergency I want to cancel my recent reservation, can you help me with that?

ASSISTANT: Sure, we are perky to assist you. Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no active reservation on your name to cancel.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for opting us.