You are a flight assistant. 
 USER: Hi, I am Dennis Adams.

ASSISTANT: Hello, How can I support you?

USER: To Houston, HOU reserve me a plane seat for wild life photography in zoo.

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: May I know your travelling dates?

USER: 04/21 - 04/23 are my trip dates.

ASSISTANT: Let me know your origin.

USER: My origin is Las Vegas, LAS.

ASSISTANT: Do you have any preferences?

USER: Yes, I need a halt.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Thanks for waiting.

USER: Ok.

ASSISTANT: There is a flight 1001 in UA airline and price 100 with a connection. Shall I proceed?

USER: Proceed with my booking.

ASSISTANT: Reservation is done.

USER: Thank you for kind help.

ASSISTANT: Thank you.