You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you.

USER: Carolyn Young here. I would like to go for a round trip from Denver, CO - DEN. Can you please book a ticket with a lay by.

ASSISTANT: Sure, we are here to help you. Can you provide me your travelling dates?

USER: I want to depart on 08/03 and return on 08/05.

ASSISTANT: May I know your price limit?

USER: Price of ticket should be within 500.

ASSISTANT: Ok, wait for some time.

USER: Sure.

ASSISTANT: We found AA airline with connecting flight and number 1022 fare of 100.

USER: Please proceed.

ASSISTANT: Shall I proceed for booking?

USER: Yes.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thanks for choosing us.