You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you help me in booking a flight ticket for my vacation to Washington?

ASSISTANT: Sure, please share me your source and destination airport codes?

USER: Thank you for considering my request. My source and destination airport codes are ORD and IAD.

ASSISTANT: May I know your connection limit?

USER: I need a single stop over in between my journey.

ASSISTANT: Please mention when you planned to travel?

USER: I have planned to move on Dec 09 and need a return flight on Dec 11.

ASSISTANT: Do you have any other requirement?

USER: No, I do not have any other requirements.

ASSISTANT: May I know your good name?

USER: Yes, my name is Dorothy Allen.

ASSISTANT: I found a connecting flight 1009 of airline Spirit, fare is 100 and class is economy. Shall I proceed with booking?

USER: Yes, do proceed with the booking.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for your kind service.

ASSISTANT: Thank you for reaching us, have a nice journey.