You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello,. May I know your good name?

USER: I am Raymond Lee.

ASSISTANT: How may I aid you today?

USER: I have done a reservation earlier to attend live concert. luckily event delayed a week, so I want to change my existing reservation.

ASSISTANT: Sure, please give me a minute I will check with the recent status and revert you.

USER: Ok.

ASSISTANT: Thank you for waiting, there is a reservation found with your name.

USER: Ok, not a problem.

ASSISTANT: Can you please provide your new reservation details?

USER: I will fly on 06/01 and return on 06/03. My departure is from IL - ORD to DC - IAD.

ASSISTANT: Do you have any other requirements?

USER: Yes, the connection between journey should be one.

ASSISTANT: Can I know the price limit?

USER: Price limit is 500.

ASSISTANT: Thank you for your valuable information, I am glad to inform that there is a flight with number 1018 and Spirit as airline. Shall I go with booking?

USER: Ok, please confirm with the booking.

ASSISTANT: Your reservation is confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.