You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Patrica Brown. I want to cancel my reservation due o my daughter's health issues, can you help me?

ASSISTANT: Sure, I will help you. Please wait a while.

USER: Thank you. Ok, take your time.

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

USER: Oh! That's fine, thank you for checking.

ASSISTANT: Thank you for choosing us.

USER: You are most welcome.