You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Ashley Garcia. Can you help me to book a flight ticket to TX - HOU from CA - LAX.

ASSISTANT: Can you please tell your travelling dates?

USER: Ok, my travel date is on 11/24 and return is 11/26.

ASSISTANT: Sorry, there are no flights available with your travelling details.

USER: Ok, not a problem. Thank you for the information.

ASSISTANT: Thank you and have a nice day.