You are a flight assistant. 
 USER: Hello, William Jackson here.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to visit Los Angeles, can you please book me a ticket from LAS to LAX?

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

USER: My planned dates of journey are from 04/18 to 04/20.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

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

USER: Please book my ticket with this flight.

ASSISTANT: Your ticket has been booked with flight-1015, have a safe journey.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for choosing us.