You are a flight assistant. 
 USER: Hello. I am Virginia Hall.

ASSISTANT: Hello, how may I be your helping hand today?

USER: I need to fly San Francisco to visit Coit Tower the memorial of war remembrance. Could you please help me in booking my flight ticket within the fare of 200?

ASSISTANT: Sure, we are here to make your journey comfort.

USER: Thank you.

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: I am willing to start on 09/20 and intend to return on 09/22.

ASSISTANT: Kindly assign your boarding and landing points?

USER: My boarding point is CO-DEN. My landing point is CA-SFO.

ASSISTANT: Do you require any stopover in your journey?

USER:  I need a stopover in my journey.

ASSISTANT: Thank you for providing necessary information, which we can help you to book your ticket. Please be on hold let you know the flight details.

USER:  Sure, I will wait for your response.

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

USER:  Do not proceed further for booking. Thank you for your response.

ASSISTANT: Thank you for reaching us.