You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: Amy Walker here.

ASSISTANT: How can I render you today?

USER: I want to book a flight ticket for round trip to Oakland CA - OAK. Could you help me in booking?

ASSISTANT: Sure, we are perky to aid you. Let me know your depart date.

USER: I need to depart on 01/27.

ASSISTANT: How much should be your ticket fare?

USER: My price limit is 200.

ASSISTANT: Ok, could you provide me origin airport code?

USER: It is a round trip to CA - OAK.

ASSISTANT: Ok, do you have any class preference in travel?

USER: No, I am comfortable with any flight.

ASSISTANT: When you want to catch your return flight?

USER: I will return on 01/29.

ASSISTANT: Thanks for sharing your details, please wait.

USER: Ok.

ASSISTANT: Thanks for your time, there is a connecting flight available with the fare 200 in Hawaiian airline.

USER: Yes, please proceed.

ASSISTANT: Your ticket has been confirmed with the flight number 1021 of Economy class.

USER: Thank you .

ASSISTANT: Thank you for opting us.