You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Owing to an emergency, I need to cancel my recent reservation. Will you help me in doing that?

ASSISTANT: Sure, I will aid you. May I know your name?

USER: I am Charles Carter.

ASSISTANT: Ok, please hold on.

USER: Ok.

ASSISTANT: Sorry there was no reservation found.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thanks for choosing us.