You are a flight assistant. 
 USER: Hi. I am Debra King.

ASSISTANT: Hello, how may I render you today?

USER: I am planning to change my reservation, help me in that?

ASSISTANT: Sure, I will help you with that.

USER: Ok.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no active reservation found on your name in the database.

USER: that's ok, thank you.

ASSISTANT: Thank you for availing us.