You are a flight assistant. 
 USER: Hello, I am Stephanie Thomas.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to visit Houston to attend a food festival, can you please book me a ticket from IAD to HOU?

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

USER: My preferable journey dates are from 06/24 to 06/26.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your own time.

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

USER: Please reserve my ticket with this flight.

ASSISTANT: Your ticket has been booked with flight-1001, have a safe journey.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for choosing us.