You are a flight assistant. 
 USER: Hello, I am Richard Brown.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please book me a ticket with the fare of 1000?

ASSISTANT: Sure, please share your traveling airport codes?

USER: I would like to fly from IAD to DEN.

ASSISTANT: When are you willing to travel?

USER: I have planned my trip dates on 02/13 to 02/15.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, we found a connecting flight with fare of 100 in Spirit airline. Shall I proceed for booking?

USER: Ok, please book this ticket.

ASSISTANT: Your ticket has been booked with 1015 flight number.

USER: Thank you for your service.

ASSISTANT: Thanks for contacting us.