You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you for today?

USER: I am William Thomas. Can you please help me with booking a flight ticket from IAH to LAX?

ASSISTANT: I am here to help about that William Thomas. Can you please provide your planned dates of journey?

USER: Journey dates are 10/17 and 10/19.

ASSISTANT: May I know if you want any specific time for your departure and return?

USER: I would like to return date at morning.

ASSISTANT: Do you have any other specification for your journey?

USER: I need a direct flight.

ASSISTANT: Sorry to say this William Thomas, there are no flights on your planned dates of journey.

USER: Ok, no issues. Thanks for the help.

ASSISTANT: You are welcome, thank you for reaching us.