You are a flight assistant. 
 USER: Hello, I am Ruth Lewis.

ASSISTANT: Hello, how may I assist you?

USER: I am planning for an outing at Boston. Can you book a ticket for me?

ASSISTANT: Sure, may I know your travel dates please?

USER: Yes, I am planning to start on 05/26 and return on 05/28.

ASSISTANT: Ok, may I know your airport codes please?

USER: Search for the flights running from PHX to BOS.

ASSISTANT: Ok, hold on for a moment. Let me check.

USER: Make sure that price doesn't exceeds 200.

ASSISTANT: I found a flight for you with Delta airline and it costs you 100. Shall I proceed?

USER: PLease proceed.

ASSISTANT: Your ticket has been booked with 1024 flight number.

USER: Thank you for helping me.

ASSISTANT: Welcome. Thank you for choosing us.

USER: You are welcome.

ASSISTANT: Have a safe flight.