You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How can I aid you today?

USER: I want to book a flight ticket to Philadelphia, with price under 200.Can you help me with it?

ASSISTANT: Sure, We are perky to help you. May I know your name and airport codes of travel?

USER: Sure,. My name is George White. Airport codes are DCA-PHL.

ASSISTANT: Please, share your dates of travel.

USER: I would like to travel on 02/26 and return back on 02/28.

ASSISTANT: Thank you for sharing details. Unfortunately, there is no flight found with your specified dates of travel.

USER: Ok, no isuues.

ASSISTANT: Thank you for consulting us.

USER: Thanks for the help.