You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Dennis Edwards.

ASSISTANT: How can I assist you today?

USER: Will you please help me to cancel my ticket due to health issue?

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

USER: Sure.

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

USER: No problem with that, thank you for your quick help.

ASSISTANT: Welcome, have a great day.