You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Andrew Garcia here.

ASSISTANT: Andrew Garcia, how can I aid you today?

USER: Can you please check with my previous booking and help me with cancellation? As, my doctor suggested me to avoid travelling.

ASSISTANT: Sure, I am here to help you. Hold on for a moment. Let me check.

USER: Ok, I will be waiting for your response.

ASSISTANT: Sorry Andrew Garcia, there are no flights reserved on your given name formerly.

USER: Oh! That's very sad to know form your side. Anyways, thank you for checking.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.

USER: You are welcome.