You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Jessica Allen here. I am a organiser I want to organise a program at Oakland, help me in booking my flight ticket with single connection.

ASSISTANT: Sure, May I know your travelling details?

USER: My travelling days are from 08/16 to 08/18.

ASSISTANT: Do you have any price limit?

USER: I want a price limit of 200.

ASSISTANT: Can you share me your airport codes?

USER: My airport codes are from TX-AUS to CA-OAK.

ASSISTANT: Ok, Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flight with your requirement.

USER: No problem thank you for your assistance.

ASSISTANT: Thank you for choosing us, have a good day.