You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: James Adams here.

ASSISTANT: How may I assist you James?

USER: Due to an emergency, I want to cancel my reservation. Can you please help me for that?

ASSISTANT: Sure, we are gleeful to help you.

USER: Ok.

ASSISTANT: Please wait a moment to check your previous reservation.

USER: Ok, I will wait.

ASSISTANT: Sorry to inform you that, there in no reservation exists with the name of James Adams.

USER: Anyway, thank you for the information.

ASSISTANT: Thank you for reaching us, have a great day.