You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Brian Gonzalez. I need to present a seminar at Philadelhia, PA - PHL. Can you please make a reservation from IAD?

ASSISTANT: Sure, may I know your travel dates?

USER: My scheduled dates of journey are 07/28 and 07/30.

ASSISTANT: Do you have any specification?

USER: I need a lay by. As my budget is low I can pay 200 only.

ASSISTANT: Thank you for providing your details, there is no flight on your details.

USER: Ok, not an issue. Thanks for your information.

ASSISTANT: Thank you.