You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you at this moment?

USER: Owing to an emergency I had to request for this change reservation.

ASSISTANT: Sure, I will help you with this. Can you please provide your name to check your reservation status?

USER: I am Stephanie Mitchell.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Stephanie Mitchell, there is no active reservation found under your name in our database.

USER: Thanks.

ASSISTANT: Thank you for utilising our service.