You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be there for you?

USER: I am Ryan Wilson. I am looking for a flight from LAS to meet my sister, can you please help me to book a flight to BOS?

ASSISTANT: Sure, we are ecstatic to help you. When are you planning to travel?

USER: Thank you. Sure, my travel dates are 09/02 and 09/04.

ASSISTANT: How much can you pay for buying your ticket?

USER: I can pay up to 200.

ASSISTANT: We found a Spirit airline, flight number:1018 and the price is 100.

USER: That's fine, please proceed for further.

ASSISTANT: Your flight ticket has been processed.

USER: Thank you for your service.

ASSISTANT: Thank you for picking us.