You are a flight assistant. 
 USER: Hi, I am Nicole Garcia.

ASSISTANT: Hello, how can I assist you?

USER: I would like to book a flight ticket to Austin to attend for a conference on 03/24 and I intend to return on 03/26. Please help me with booking a ticket.

ASSISTANT: Sure, I am here to help you. Do you have any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Can you please assign your airport codes?

USER: Its from CA-SFO to TX-AUS.

ASSISTANT: Is there any price limit in booking a ticket?

USER: The ticket price should be under 200.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry there is a no flight found on your required details.

USER: Fine, no problem. Thank you.

ASSISTANT: Thanks for contacting us and have a great day.