You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Jeffrey Turner, I am unable to travel at this moment due to health issues, so can you help me for cancelling my recent reservation?

ASSISTANT: Yes, I can help you.

USER: Thank you.

ASSISTANT: Give me a moment.

USER: Ok, I will wait for your reply.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: Oh! I think my sister already cancelled my reservation, anyway thank you for your services.

ASSISTANT: Thank you for contacting us.