You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you?

USER: I am Amanda Thompson. I want to change my existing reservation due to some issues, can you please help me with that?

ASSISTANT: Sure, please wait for a moment to check your details.

USER: Sure.

ASSISTANT: Thank you for waiting, no reservation found on your name.

USER: Ok, not a issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.