You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Gregory King.

ASSISTANT: Ok, I will help you with that.

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

ASSISTANT: Ok, I will check with the reservation records.

USER: Ok, take your time.

ASSISTANT: Sorry, there is no reservation been done. Thank you for connection with our agency.

USER: That's ok, thank you for checking,.