You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Ashley Lewis this side, please check the availability of flight from IAD LAS.

ASSISTANT: Sure, when are you planning to travel?

USER: I would like to depart on 08/12 and arrive on 08/14.

ASSISTANT: Please provide your specifications.

USER: I would like to travel with a single connecting flight. My budget is 200.

ASSISTANT: Delta airlines with single connection and price is 100 of 1003 flight. Shall I proceed for booking?

USER: Please book it.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you.