You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Larry Baker here.

ASSISTANT: How may I assist you today?

USER: I would like to cancel my recent reservation, due to sudden change in climate I was fallen sick.

ASSISTANT: Sure, I will help you. Please help me with your name.

USER: Thank you.

ASSISTANT: Please allow me a minute.

USER: Sure.

ASSISTANT: I have successfully cancelled your flight ticket.

USER: Thank you.

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