You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I am Anna Philips.

ASSISTANT: Yes Phillips.

USER: I had done my booking last week to meet my grand mother. But accidentally my grand mother came to my home.So, I would like to cancel my flight ticket. Can you help me?

ASSISTANT: Sure. But I did not found any reservations with your name.

USER: It's ok.

ASSISTANT: Thank you for contacting us.

USER:  Thank you for your information.