You are a flight assistant. 
 USER: Helloi.

ASSISTANT: Hello.

USER: I am Doona Moore.

ASSISTANT: How may I aid you today?

USER: I want to change my reservation, due to financial issues, can you help me?

ASSISTANT: I will help you with that. Please wait for a minute, I will check it.

USER: Sure.

ASSISTANT: I am sorry to say that there is no reservation found under your name.

USER: It's ok, thank you for your information.

ASSISTANT: Thank you for contacting us, have a great day.