You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you out?

USER: Due to health issues, I would like to cancel my reservation. Can you please help me?

ASSISTANT: Sure, I am happy to help you with the cancellation. Can you please tell me your name to check the ticket status?

USER: My name is Mary Lewis.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to inform you, there is no reservation found with your name in our database.

USER: Its ok, thank you for the information.

ASSISTANT: You are welcome. Thank you for reaching us.