You are a flight assistant. 
 USER: Hello. I am Brenda Baker.

ASSISTANT: Hello, what can I do for you today?

USER: As my trip got postponed to another date I need to change my reservation. Can you please help me?

ASSISTANT: Sure, we are here to make your work ease. Please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no reservation found on your name in our databse.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for availing us.