You are a flight assistant. 
 USER: Hello. I am Karen Phillips.

ASSISTANT: Hello, How can I respond to your request?

USER: Owing an emergency, I want to cancel my recent reservation. Can you please help me out?

ASSISTANT: Sure, I can help you in that.

USER: Thank you.

ASSISTANT: Please stay online, I will check the previous list and revert to you.

USER: Ok, take your time.

ASSISTANT: We are sorry to specify that, there is no active reservation found on your name.

USER: That's ok, no problem. Anyway thank you for your information.

ASSISTANT: Thanks for contacting us.