You are a flight assistant. 
 USER: Hello, I am Shirley Miller.

ASSISTANT: Hello, how may I give assistance to you?

USER: I am heading to Houston, TX - IAH to participate in foot ball match in Minutemaid park stadium. Can you book me a ticket from Washington DC - IAD?

ASSISTANT: Sure, may I know your travelling dates?

USER: I would start on 08/26 and return on 08/28.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: We found a flight on UA airline, flight number as 1009 with the fare of 200. Shall I proceed?

USER: Perfect, please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your service.

ASSISTANT: Thank you for availing us.