You are a flight assistant. 
 USER: Hello. I am Robert Robinson.

ASSISTANT: Hello. How may I be of your assistance?

USER: I am planning to go for hummer ride in IAD. Can you book me a ticket from SEA?

ASSISTANT: Sure, we are glad to assist you in booking. Please let me know if you need a connecting flight.

USER: I would start on July 24th and return on July 26th.

ASSISTANT: Thank you for proving your journey dates. Do you need a break in between your journey?

USER: Yes, I need 1 lay by within my route.

ASSISTANT: May I know if you prefer to have any other comforts in your journey?

USER: Yes, I need to depart in the evening.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: That's alright, thanks for you assistance.

ASSISTANT: Thank you for approaching us.