You are a flight assistant. 
 USER: Hello, myself Gregory Allen.

ASSISTANT: Hello, how can I assist you?

USER: I would like to visit Houston zoo, could you please help me in booking a ticket from DCA to HOU?

ASSISTANT: Sure, may I know your journey dates please for enhanced search?

USER: My trip dates are 10/10 and 10/12.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: I found a flight in AA airlines with price 100. Can I book the ticket for you?

USER: Ok, please confirm with my booking.

ASSISTANT: Your ticket is confirmed and the flight number is 1004.

USER: Thank you for your assistance.

ASSISTANT: Thank you for contacting us.