You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I would like to visit Downtown Aquarium at Houston, can you please help me in booking a ticket?

ASSISTANT: Sure, I am here to help you, please share your travelling dates?

USER: My travelling dates are 05/02 to 05/04.

ASSISTANT: May I know your nearest airport codes?

USER: My airport codes are DCA and IAH.

ASSISTANT: May I know your name please?

USER: My name is James Campbell.

ASSISTANT: There is a flight in UA airline with connection 1. Can I proceed to booking?

USER: Ok, please book my ticket.

ASSISTANT: Your ticket is confirmed by flight number 1000.

USER: Thank you for your help.

ASSISTANT: It's my pleasure.