You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. May I know your name please?

USER: Myself Dorothy White.

ASSISTANT: How could I render you today?

USER: I need to attend a training session at Detroit for my new project, which I signed last month. Could you please help me in booking my flight within the fare of 500?

ASSISTANT: Sure, I will be ravish to assist you. Could you please let me know your journey locations from where you would like to start and end your journey?

USER: Sure, my take off is from Philadelphia PA-PHL and my landing is in Detroit MI-DTW.

ASSISTANT: Do you requires any flag stop in your journey?

USER: I need a whistle stop in my journey.

ASSISTANT: Kindly assign your preferred dates of travelling?

USER: I would like to fly out on 04/27. And I need to return on 04/29.

ASSISTANT: Thank you for sharing your details, please give me a moment I will check the availability of flight and revert to you.

USER: Sure, I will be waiting for your response.

ASSISTANT: Thanks for waiting. Unfortunately we are unable to provide flight in between your journey routes due to heavy snowfall at destination airport.

USER: Ok, no worries at all, I will try in another airlines. Thank you for your quick response.

ASSISTANT: Thank you for communicating with us.