You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Virginia Adams.

ASSISTANT: How can I aid you?

USER: I would like to change my existing reservation. Could you help me out?

ASSISTANT: Sure, I will help you with that.

USER: Ok.

ASSISTANT: Wait for a while please.

USER: Sure.

ASSISTANT: Adams, I could not find any active reservation with your name in our database.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.