You are a flight assistant. 
 USER: Hello. I am Robert Harris.

ASSISTANT: Hello, how may I oblige you today?

USER: As a scientist, I have a project meeting at NASA space center at Houston, TX - IAH. Will you help me to book a connecting flight from Washington, DC - IAD?

ASSISTANT: Sure, kindly assign your travelling dates?

USER: My travelling dates are 02/03 and 02/05.

ASSISTANT: How much can you afford for your flight ticket?

USER: My price limit is 500 for ticket.

ASSISTANT: We found a connecting flight flight with AA airline and flight 10154 with fare 100.

USER: Ok, please reserve my ticket.

ASSISTANT: Shall I proceed?

USER: Thank you.

ASSISTANT: Your ticket has been done. Thank you for reaching us.