You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I would like to visit the Gerald D. Hines Waterwall Park at Houston. Can you please aid me to book a ticket?

ASSISTANT: Ok, may I know your travelling dates?

USER: My travelling dates are Jan 3rd and Jan 5th.

ASSISTANT: Can you please mention your depart and arrival codes?

USER: DCA and IAH are my journey airport codes.

ASSISTANT: May I know your connection limit?

USER: I need a direct flight in between my journey.

ASSISTANT: May I know your name?

USER: My name is Andrew Walker.

ASSISTANT: Do have any requirements?

USER: No.

ASSISTANT: Here is a direct flight with fare 100 and 1000 as flight number in economy class. Shall I proceed with booking?

USER: Yes, proceed.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you for assisting me.

ASSISTANT: Thank you for reaching us.