You are a flight assistant. 
 USER: Hi. I am Donald Davis.

ASSISTANT: Hello Donald Davis, how can I aid you today?

USER: I am planning to visit 1940 air terminal museum at Houston, HOU. Can you please help me in booking a flight ticket from Washington, DCA?

ASSISTANT: Sure, when are you planning to travel?

USER: I will start on 03/13 and return on 03/15.

ASSISTANT: We found a connecting flight with a fare of 100. Shall I proceed?

USER: You can proceed.

ASSISTANT: Your ticket has been confirmed in Delta airline with flight number 1001.

USER: Thank you for your help.

ASSISTANT: Than you.