You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: Please let me know your travelling dates.

USER: My journey dates are Mar 25 to 27.

ASSISTANT: Is there any airline preference?

USER: I need a connecting flight which returns in evening.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: Can I know your name?

USER: I am Gary Thomas.

ASSISTANT: Found ticket with JetBlue airlines for price 200. Shall I book a ticket?

USER: Ok, please proceed.

ASSISTANT: Your ticket is booked having flight number 1021 which departs at 4:00 hours and arrives at 20:00 hours.

USER: Thank you.

ASSISTANT: Thank you.