You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I need to cancel my ticket due to my health issue, can you help me with that?

ASSISTANT: I am sorry to know that. I will help you. Please let me know with your name.

USER: I am Jessica Harris.

ASSISTANT: Please allow me a minute.

USER: Sure.

ASSISTANT: Jessica Harris, I am sorry to say that there is no reservation found on your name.

USER: That's ok. Thank you.

ASSISTANT: Thank you for reaching us. Have a great time.