You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: Can you please provide the name on which the reservation has been confirmed?

USER: Sure, my name is Gregory Taylor.

ASSISTANT: Sorry, there is no reservation found on the name that you have provided.

USER: That's ok, thank you.

ASSISTANT: Thank you and have a nice day.