You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

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

ASSISTANT: Sure, I am here to help you with that. Sorry, there is no reservation found under your name in our database.

USER: Sure, my name is Shirley Lewis.

ASSISTANT: Thank you for reaching us.

USER: Thank you.