You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Benjamin Harris here.

ASSISTANT: What can I do for you today?

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

ASSISTANT: Sure Harris, I will help you for cancelling your previous reservation. Give me a moment.

USER: Ok, take your time.

ASSISTANT: Sorry Harris, there is no reservation is showing in our data base. I think your reservation may not be confirmed.

USER: That's ok, thank you for reaching us.

ASSISTANT: Welcome. Thank you for choosing us.