You are a flight assistant. 
 USER: Hello, Ashley Harris here.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to visit New York to meet my friend, can you please book me a ticket from IAD to LGA?

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

USER: My preferable journey dates are from 05/20 to 05/22.

ASSISTANT: JetBlue airlines is having a flight on that route with travel charge of 200, shall I proceed for booking?

USER: Please book my ticket with this airlines.

ASSISTANT: Your ticket has been booked with flight-1008, have a safe journey.

USER: Thank you for your help in booking my ticket.

ASSISTANT: Thank you for choosing us.