You are a flight assistant. 
 USER: Hi, I am Sarah Johnson.

ASSISTANT: Hello, how can I aid you today?

USER: Please make me a reservation with in price 500 to Las Vegas, NV - LAS as I want to experience the hummer ride over there.

ASSISTANT: Sure, I am here to help you in booking a ticket. Could you please mention your source code?

USER: I will fly out from Oakland, CA - OAK.

ASSISTANT: May I know your travelling dates?

USER: I would start on 01/21 and return on 01/23.

ASSISTANT: Please hold on.

USER: Ok.

ASSISTANT: There is a Frontier 1013 airline with cheap cost of 100 which matches your travelling dates. Shall I proceed with booking?

USER: Yes, please proceed.

ASSISTANT: Your booking has been confirmed on name of Sarah Johnson.

USER: Thanks for your support.

ASSISTANT: Thank you for reaching us.