You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Barbra Collins.

ASSISTANT: How may I be your helping hand today?

USER: I want to book a ticket from DCA to BOS as I have meeting purpose, can you please help me that?

ASSISTANT: Sure, please help me with your connection limit?

USER: I need a halt.

ASSISTANT: Ok, when would you like me to book a flight ticket?

USER: I would like to leave between 04/03 and 04/05.

ASSISTANT: Ok, how much you can afford for a flight ticket?

USER: I can afford up to 500.

ASSISTANT: We found a UA airline with fare of 200 matches your travelling dates. Shall I proceed with booking?

USER: Please book this ticket.

ASSISTANT: Your ticket has been confirmed with flight number 1015.

USER: Thank you.

ASSISTANT: Thank you for opting us.