You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Helen White here.

ASSISTANT: How can I help you Helen?

USER: Can you cancel my recent reservation which I have done 2 months before to meet my parents.

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: There is no reservation on your name in our database.

USER: It's ok, thanks for your response.

ASSISTANT: Thank you for reaching us.