You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am James Gonzalez.

ASSISTANT: How can I assist you today?

USER: I am planning to travel from DCA to DCA, can you help in booking a flight?

ASSISTANT: Sure, I'm always here to help you. Can you please provide me your planned travel dates?

USER: My travelling dates are 04/27 to 04/29.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Spirit airlines is having a flight on that route with travel charge of 100, shall I proceed for booking?

USER: Proceed for booking.

ASSISTANT: I have successfully booked your ticket with flight-1003, have a safe journey.

USER: Thank you.

ASSISTANT: Thank you for choosing us.