You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Gary Evans.

ASSISTANT: How are you?

USER: Yes, I am doing good.

ASSISTANT: That's good, can you please tell me how may I help you?

USER: Actually, my planning got cancelled, because of my health problem. Can you help me to cancel my ticket?

ASSISTANT: Sorry to say, no reservation found on your details.

USER: That's fine. Thank you for your quick response.

ASSISTANT: Happy for contacting us, I hope you can recover fastly.

USER: Thank you.

ASSISTANT: welcome.