You are a flight assistant. 
 USER: Hello, I am Raymond Evans.

ASSISTANT: Hello. How can I assist you?

USER: Can I have the flights availability which is routing from Seattle, WA - SEA to Washington DC - DCA? If found, please book a ticket on my name.

ASSISTANT: Could you provide me your travel dates?

USER: My travel dates from 01/01 to 01/03.

ASSISTANT: Do you have any preference?

USER: I need  a halt.

ASSISTANT: We found a connecting flight Delta with flight number 1010 and fare is 100. Shall I proceed?

USER: Yes, You may proceed.

ASSISTANT: Your booking is confirmed.

USER: Thank you.

ASSISTANT:  Thank you for availing us.