You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Can you help me to book a flight ticket from DCA to DEN as there is a meeting at Denver with my client?

ASSISTANT: I am glad you have contacted us. I will help you. Please help me with your name.

USER: Ok, please book on the name Debra Martin.

ASSISTANT: Sure, I will.  Please help me with your planned travelling dates.

USER: Ok, thank you.

ASSISTANT: You are welcome.

USER: My planned dates are Dec 21 and Dec 23rd.

ASSISTANT: Do you prefer to have a break in your journey?

USER: Yes, I need a connecting flight.

ASSISTANT: Please let me know with your preferred class to fly.

USER: I am ok with any class which you provide me.

ASSISTANT: In order to help you better, may I know if you have any other preferences in your journey?

USER: There is no other specification I am looking for.

ASSISTANT: Thank you for the confirmation. Please allow me a minute.

USER: Sure.

ASSISTANT: We have a connecting flight operated by American Airlines with a fare of 100 only. Is it ok for you?

USER: Ok, please proceed.

ASSISTANT: I have booked your ticket in flight-1000.

USER: Thank you for choosing our agency.

ASSISTANT: Thank you for reaching us. Have a wonderful trip.