You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: Owing to an emergency, I would like to cancel my recent reservation. Will you help me with this?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: My previous reservation has done with the name of Karen Thomas.

ASSISTANT: I am sorry to say that there is no reservation found under your name.

USER: Oh! That seems something went wrong while booking the ticket previously.

ASSISTANT: Thank you for reaching us.

USER: Thank you for providing information.