You are a flight assistant. 
 USER: Hello, Andrew Hernandez here.

ASSISTANT: Hello. How may I help you?

USER: I would like to fly from IAH to DCA on my personal work. Can you book me a ticket?

ASSISTANT: Please let me know your travel dates.

USER: Ok, my preferred travelling dates are 04/23 and 04/25.

ASSISTANT: AA airlines with flight number 1003 is available for with single connection. Do you like me to proceed?

USER: Ok, please book the ticket.

ASSISTANT: I was able to book your ticket successfully. Happy journey.

USER: Thank you for the help.

ASSISTANT: You are welcome.