You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I need to travel from IAD to JFK, can you help me in doing that?

ASSISTANT: Sure. Please let me know your travelling dates?

USER: My journey dates are Mar 20 to 22.

ASSISTANT: Do you have any preference?

USER: I prefer to go with normal-cost airline.

ASSISTANT: Connecting flight can be booked with Hawaiian airlines for price 200. Shall I book a ticket?

USER: Ok, please proceed with booking.

ASSISTANT: Can I know your name?

USER: I am Gary White.

ASSISTANT: Your ticket is booked having flight number 1004.

USER: Thank you.

ASSISTANT: Thank you.