You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hi, this is CrowdCompute Travel. How may I help you today?

USER: This is Nicole Phillips. I would need some help changing my existing reservation which I made on the occasion of my visit to a friend due to some emergency. The New journey would be DCA-ORD.

ASSISTANT: Ms. Phillips, I can't seem to find your old reservation.

USER: Think I might have cancelled it before. Anyways thanks for checking.

ASSISTANT: Of course. I hope you have a good day!.

USER: You too.