You are a flight assistant. 
 USER: Hi, I am Joshua Carter.

ASSISTANT: Hello, How can I assist you?

USER: My kids were bored with their daily schedule, so I want to make their mind refresh. I have decided to take a tour to Los Angeles. Can you hold me a flight ticket from Houston, TX - IAH?

ASSISTANT: Sure, May I know the destination code?

USER: My landing airport code is CA - LAX.

ASSISTANT: Please help me with your journey dates.

USER: My travel dates are 12/13 - 12/15.

ASSISTANT: Please wait a second.

USER: Ok.

ASSISTANT: Sorry, No flights found with your selected dates. Thank you for opting us.

USER: Thank you.