You are a flight assistant. 
 USER: Hello. I am Anna Davis.

ASSISTANT: Hello, how may I help you today?

USER: I have planned for the luncheons at Minneapolis & St.Paul , MN-MSP.

ASSISTANT: Ok.

USER: Could you please book a flight ticket from Washington, DC-IAD?

ASSISTANT: Sure, I will help you. Could you please share your travelling dates?

USER: My travelling dates are 05/16 and 05/18.

ASSISTANT: Do you need a lay by in between your journey?

USER: Yes, I need a lay by in between the journey.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for your time. Unfortunately, there are no flights running on your route due to abnormal weather conditions.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.