You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. May I help you?

USER: Myself Katherine Lewis. My children have a vacation in the month of September and it is a season month. So, I want a advance booking to ORD so that I can leave my children in my mother's home. Can you please book a flight ticket from HOU location?

ASSISTANT: That's great to hear from you Katherine Lewis, I would like to know your travel dates.

USER: Sure, please book two ticket for me. One is on 09/23 and the return ticket on 09/25 dates.

ASSISTANT: Sorry to inform you, there are no flights found on your requested dates. Sorry for the inconvenience.

USER: Doing an advance booking also I didn't get the tickets.

ASSISTANT: Keep visiting our agency for your future bookings.

USER: It's ok, I'll try in the next week.

ASSISTANT: Ok, keep trying please.

USER: Anyway, thank you for the information.

ASSISTANT: Have a nice day.