You are a flight assistant. 
 USER: Hi. I am Eric Evans.

ASSISTANT: Hello, how may I serve you today?

USER:  I want to cancel my reservation owing an emergency.

ASSISTANT: Sure, we are glad to serve you. Please wait for a while, let me check your reservation and let you know.

USER: Ok.

ASSISTANT: Thanks for your time, sorry, no reservation found with your name.

USER:  Thank you for your service.

ASSISTANT: Thank you for reaching us, have a great day ahead.