You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you help me in doing a reservation from IAD to LGA?

ASSISTANT: Sure, can I know your travel dates?

USER: My journey dates are Feb 24 to 26.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Are there any other specifications?

USER: Please ensure that my return time is in evening.

ASSISTANT: May I know your good name?

USER: I am Christopher Green.

ASSISTANT: There is a flight with the price of 200 having one connection and return at 21:00 hours. Shall I proceed to booking?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been reserved with the flight- 1027.

USER: Thank you.

ASSISTANT: Thank you for reaching us.