You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

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

ASSISTANT: Sure, may I know your name to check for the previous reservation?

USER: I am Cynthia Harris.

ASSISTANT: Please allow me a moment.

USER: Sure.

ASSISTANT: I found your reservation and successfully cancelled your reservation.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.