You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I am Brenda Adams. I want to make some changes in my flight reservation, can you please help me?

ASSISTANT: Sure, I will help you in booking. Sure, I will help you in changing.

USER: Thank you.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: There is no reservation found with your given name in our data.

USER: Not an issue. Anyway, thank you for checking.

ASSISTANT: Thank you for availing us.