You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Shirley Rodriguez.

ASSISTANT: How can I provide assistance for you?

USER: I am planning to go for technical tour to NASA space centre at Houston, HOU. Can you please book a ticket on 04/13?

ASSISTANT: Please mention your source code.

USER: Washington, IAD is my boarding point.

ASSISTANT: Your return date please?

USER: I will return on 04/15.

ASSISTANT: How much can you afford for your journey?

USER: I can afford up to 500.

ASSISTANT: Thanks for your details. You have a flight with 1 connection of price 100 in Southwest airline.

USER: You can proceed.

ASSISTANT: With 1023 flight your ticket is reserved.

USER: Thank you.

ASSISTANT: Thank you for picking us.