You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Amanda Martin.

ASSISTANT: Amanda Martin, how may I assist you today?

USER: Owing to an emergency, I want to change an existing reservation, so please help me in changing the reservation.

ASSISTANT: Sure, I will help you. I see that there is no active reservation done on your name.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for reaching us. Have great day.