You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to attend a meeting in IAD, so I want to start my journey from LAS. Can you please search a flight ticket and confirm my ticket with name David Walker?

ASSISTANT: Sure, please provide your itinerary dates.

USER: My travelling dates are 08/17 and 08/19.

ASSISTANT: Please give me a moment to check for available flights.

USER: Ok.

ASSISTANT: AA airlines with flight 1025 is available.

USER: Ok, please proceed.

ASSISTANT: David, your ticket is reserved.

USER: Thank you.

ASSISTANT: Thank you for approaching us.