You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I am Kenneth Perez from Seattle. I need to reserve a flight ticket to Washington to meet my uncle who is working in one of the top most hostels. Can you book a flight ticket to Washington with a connecting flight?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Can I know your airport codes?

USER: I want to board from WA-SEA, my uncle will pick up me at DC-IAD.

ASSISTANT: How much you can afford for ticket? May I know your travelling dates?

USER: I can spend up to 1000. 05/09 is my starting date, my return date will be 05/11.

ASSISTANT: Ok, thank you for providing your details. Sorry to inform you that, currently there are no flights available.

USER: Its ok, thank you for your information.

ASSISTANT: Thank you for opting us.

USER: I will find out other alternative. Thank you for your effort.

ASSISTANT: Hope we serve you next time.