You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can you please book a flight ticket from JFK to IAD?

ASSISTANT: Sure, can you please share your planned trip dates?

USER: Thank you. I have planned my travel dates as Dec 25 and Dec 27.

ASSISTANT: Is there any time concern for your journey?

USER: No, I am ready to travel in any time.

ASSISTANT: Kindly, share your good name with us.

USER: Sure, myself Jacob Garcia.

ASSISTANT: Please mention your airline preference.

USER: I am not specific about any airlines.

ASSISTANT: Do you have any other specifications?

USER: Yes, I am looking for single connecting flight so please check with that.

ASSISTANT: We found a connecting flight of fare 100 with airline Spirit and number 1002. Can I proceed?

USER: That is fine, please proceed with booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for  your help.

ASSISTANT: Thank you for availing us.

USER: Most welcome.