You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I would like to visit Wet'n'Wild Splash Town at Houston, HOU, can you please book me a ticket?

ASSISTANT: Sure, we will help you. May I know your take off point?

USER: My source airport code is TX-IAH.

ASSISTANT: On what dates you would like me to book your ticket?

USER: My travel dates are from 08/22 to 08/24.

ASSISTANT: Do you have any preference in connection?

USER: I want a single connection.

ASSISTANT: Can I have your name please?

USER: I am Frank Nelson.

ASSISTANT: Ok, please wait. Sorry Frank, we don't have flight on your dates.

USER: Ok. Thank you.

ASSISTANT: Thank you for reaching us.