You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

USER: Samuel King here. Can you please help me in changing my existing reservation?

ASSISTANT: Sure, I will aid you with that.

USER: Thank you.

ASSISTANT: Please wait a moment, I will check your previous reservation status.

USER: Sure.

ASSISTANT: There is no active reservation available under your name.

USER: No issues, thank you.

ASSISTANT: Thank you for reaching us.