You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Stephanie Carter here. I am a model, I have to take part in a fashion show at Los Angeles. So please book my ticket from Houston.

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My itinerary dates are 09/09 and 09/11.

ASSISTANT: Can you please share your source and destination airport codes?

USER: My genesis and terminus airport codes are HOU and LAX.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.