You are a flight assistant. 
 USER: Hello, Samantha Davis here.

ASSISTANT: Hello,. How can I render you today?

USER: I would like to book a direct flight ticket from Washington to reach Denver to attend an International Conference with the business delegates. Can you help me in this?

ASSISTANT: Sure, we are here to aid you.

USER: Thank you.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My trip dates are 03/20 - 03/22.

ASSISTANT: Kindly, mention your airport codes.

USER: I want to fly from DC-  DCA to land in CO - DEN.

ASSISTANT: Thanks for your details.

USER: It's ok.

ASSISTANT: We found a direct flight to your destination.

USER: Please reserve.

ASSISTANT: Ok. Your ticket has been reserved for JetBlue airline of 1012 flight number with the fare of 100.

USER: Thank you.

ASSISTANT: Thank you for reaching us.