You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for today?

USER: I am Barbara Miller, can you help me cancelling my recent reservation because I am unable to travel at this moment due to health issues?

ASSISTANT: My I know your name? May I know you name? Sorry, there is no reservation found under your name.

USER: Oh! It's ok, no problem.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your services.