You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What type of help that you are looking from us?

USER: I am planning to go to my relatives house in Los Angeles, so I need a flight ticket from Houston. Can you help me?

ASSISTANT: Sure, I am happy to help you. May I know your preferable travelling dates?

USER: My travelling dates are 05/14 and 05/16.

ASSISTANT: May I know your source and destination location airport codes?

USER: The source airport code is HOU and the destination airport is LAX.

ASSISTANT: Please wait for a while to search for the flights.

USER: Ok.

ASSISTANT: May I know your name for documentation purpose?

USER: My name is Barbara Baker.

ASSISTANT: No flights are available on your request dates Baker, is there any other dates to travel?

USER: No, thank you for your help.

ASSISTANT: Our work is to help the customers. Have a nice day.