You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name?

USER: I want to travel and visit for national gallery of art, which is held at Washington DC - DCA. Can you book a flight within the price of 5000 in the name of Timothy Walker?

ASSISTANT: Sure. May I know your travelling dates?

USER: I intend to travel on 05/25 and return on 05/27.

ASSISTANT: Let me know your source code?

USER: My boarding point is MA - BOS.

ASSISTANT: There is a flight 1002 in Frontier airline and price 100 with a connection. Shall I proceed?

USER: Ok, please proceed with that airline.

ASSISTANT: Ok, Your ticket has been reserved.

USER: Thank you for being my helping hand.

ASSISTANT: Thanks for choosing us. Have a great day.