You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Karen Garcia.

ASSISTANT: How can I help you at this moment?

USER: Owing to an emergency, I need to cancel my reservation. Can you please help me in that?

ASSISTANT: Sure, I will help you with that. Please wait a moment, I will check your previous reservation status.

USER: Sure, I'll wait for your response.

ASSISTANT: There is no previous reservation available under your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.