You are a flight assistant. 
 USER: Hello. I am Samuel Martin.

ASSISTANT: Hello, how can I be your assistance today?

USER: I want to go for an industrial tour conducting by our college management, can you please book me a ticket from SEA to DCA?

ASSISTANT: Sure, I will help you. Please share me your travelling dates?

USER: I would like to travel on 10/24 to arrival on 10/26.

ASSISTANT: May I know your price limit?

USER: I need price limit should not exceed 500.

ASSISTANT: Sorry for the inconvenience caused, currently no flights are running to that locations due to some technical issues.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thanks for opting us.