You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

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

ASSISTANT: Sure, please wait for a minute.

USER: Ok, I will wait.

ASSISTANT: I could not find any reservation with your name.

USER: Anyway, thanks for the information.

ASSISTANT: It's my pleasure.