You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Samuel Gonzalez here.

ASSISTANT: How can I help you today?

USER: I am a politician, I have to meet Donald Trump at Washington DC. So please book my ticket from Houston.

ASSISTANT: Sure, could you please tell me your travel dates?

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

ASSISTANT: May I know your airport codes?

USER: I will be travelling from HOU to DCA.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Flight-1009 is providing a service for you with AA airlines.

USER: Please book my ticket.

ASSISTANT: Samuel, your booking is done.

USER: Thank you.

ASSISTANT: You are welcome.