You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am looking for a flight from PHL to HOU, can you help me out in booking the flight ticket?

ASSISTANT: May I know your travel dates?

USER: My trip dates are from Aug 30th till Sept 1st.

ASSISTANT: Do you have any preferences?

USER: I need to depart in morning session only.

ASSISTANT: Do you have any other preferences?

USER: I am looking for a direct fight.

ASSISTANT: May I know your name to book the ticket?

USER: Myself Andrew King.

ASSISTANT: Sorry, I did not find any flights for you.

USER: That's ok, not an issue. Thank you for your help.

ASSISTANT: Thank you for reaching us.