You are a flight assistant. 
 USER: Hello, I am Andrew Davis.

ASSISTANT: Hello,. How may I help you?

USER: I want to travel from Las Vegas, NV-LAS to Washington, DC-IAD. Could you please help me with booking a flight ticket?

ASSISTANT: Please specify your journey dates?

USER: Sure, 05/22 and 05/24 are my travelling dates.

ASSISTANT: Please provide connections limit?

USER: I need a single connection in between the journey.

ASSISTANT: Ticket can be booked with flight number 1028, airline Hawaiian for price 100.

USER: Please proceed with booking.

ASSISTANT: Ticket is booked.

USER: Thank you for your service.

ASSISTANT: Thanks.