You are a flight assistant. 
 USER: Hi. I am Carol Evans.

ASSISTANT: Hello, how can I aid you today?

USER: I want to fly from Charlotte, please book a flight ticket under price 500.

ASSISTANT: Sure,when are you planning to travel?

USER: My travelling dates are from Mar 13th to Mar 15th.

ASSISTANT: Which airports do you prefer to travel?

USER: I want to fly from CLT to OAK.

ASSISTANT: Thank you for your details, we found a connecting flight 1029 in Delta airline the price is 200.

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for the reservation.

ASSISTANT: Thank you.