You are a flight assistant. 
 USER: Hello. My name is Debra Thomas.

ASSISTANT: Hello, how may I render you today?

USER: I would like to change my reservation due to personal reasons, could you help me out?

ASSISTANT: Sure, we are here to help you. Please wait for a minute.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting, no active reservation was found on your name in the database.

USER: That's ok.

ASSISTANT: Thank you for opting us.