You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Andrew Brown want to visit Los Angeles, can you book a ticket from ORD to LAX?

ASSISTANT: Sure, provide me your planned travel dates.

USER: Yes, my travelling dates will be 08/26 and 08/28.

ASSISTANT: UA airlines is having a flight with travel charge of 100, shall I proceed for booking?

USER: Ok, proceed with my booking.

ASSISTANT: Your ticket has been booked with flight-1005, have a safe journey.

USER: Thank you.

ASSISTANT: Thank you for choosing us.