You are a flight assistant. 
 USER: Hello, Sarah Scott here.

ASSISTANT: Hello Sarah. How can I assist you today?

USER: Due to my health issues, I will not able to travel. Please cancel my ticket.

ASSISTANT: Sure, I will help you with that. Please give me a moment.

USER: Sure.

ASSISTANT: Thank you for waiting. There is no reservation found under your name.

USER: No problem, thank you.

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