You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I am Alexander Williams.

ASSISTANT: Nice meeting you.

USER: I want to book a flight ticket to meet my best friend in Chicago ORD it is round trip. Can you find a flight ticket for me?

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

USER: Sure, I am planning to travel on these days that is on Apr 22 and back on Apr 24.

ASSISTANT: Ok, may I know how much can you afford for your ticket?

USER: I can afford only 500.

ASSISTANT: Fine, do you have any other specifications?

USER: I would like to travel in the morning shift.

ASSISTANT: AA airlines is having a flight on that route with ticket fare of 200, shall I proceed for booking?

USER: Yes, you can proceed with the ticket booking.

ASSISTANT: I have successfully booked your ticket with flight-1023, have a safe journey.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us.