You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: My name is Ashley Williams. I got an invitation for Pasadena Strawberry festival from my step mom, can you help me to book a flight ticket to Washington, DC - IAD?

ASSISTANT: Sure, help me with your takeoff airport code.

USER: Sure, I am boarding from Houston, TX - IAH.

ASSISTANT: What are the dates that you preferred to travel?

USER: My travelling dates are 04/24 to 04/26.

ASSISTANT: Ok, please hold on.

USER: Sure.

ASSISTANT: Thanks for your time, we found a flight with airlines: AA, connection: 1, price: 100 and flight number: 1009. Shall I book the ticket?

USER: Ok, you can proceed.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you for choosing us.