You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, Please inform me how may I assist you the day?

USER: Stephen Gonzalez here. I want to attend a Marriage in Washington. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I am gleeful to assist you.

USER: Thanks.

ASSISTANT: Do you require any stopovers in your journey?

USER: I would prefer single halt.

ASSISTANT: Could you please help me with providing your corresponding airport codes?

USER: My airport codes are DEN and IAD.

ASSISTANT: Sure, Can you please let me know your travelling dates?

USER: My travelling dates are 06/24 and 06/26.

ASSISTANT: Ok, which type of class do you prefer for your journey?

USER: I am comfortable with any class.

ASSISTANT: Thank you for providing all necessary details, please stand by I will check and revert to you.

USER: Ok, I will wait.

ASSISTANT: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: Anyway, thanks for the information.

ASSISTANT: Thanks for contacting us. Have a great day.