You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

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

ASSISTANT: Sure, may I know your name?

USER: Samuel Nelson here.

ASSISTANT: Please give me a moment to check your ticket status.

USER: Sure.

ASSISTANT: Sorry Samuel Nelson, no reservation is available by your name.

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

ASSISTANT: Thank you for choosing us.