You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Myself Shirley Moore. Could you please help me to book a ticket?

ASSISTANT: Yes Moore, I am here to help you.

USER: I would like to travel to LGA from DCA.

ASSISTANT: Please provide airport codes.

USER: My travelling dates are 12/20 to 12/22.

ASSISTANT: Wait a moment please, I am checking the availability.

USER: Sure.

ASSISTANT: There is a flight 1018 of UA airlines. Shall I proceed the booking?

USER: May I know the flight fare?

ASSISTANT: Price of the ticket is 200.

USER: Ok, please proceed.

ASSISTANT: Your ticket has been booked successfully.

USER: Thank you for your information.

ASSISTANT: Thank you and have a safe journey.