You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. May I know your name please?

USER: Angela Lewis is my name.

ASSISTANT: How can I provide assistance to you?

USER: I want to go to Dallas & Fort Worth to attend meeting with my company delegates so, please book a economy class ticket under a fare of 1000.

ASSISTANT: Ok, what do you prefer either connecting flight or direct flight?

USER: I prefer only connecting flight with one connection.

ASSISTANT: May I know your destination and boarding locations with airport abbreviates?

USER: Sure, my boarding location is Washington DC - IAD. And my destination code is TX - DFW.

ASSISTANT: Can you please share me your planned dates of journey?

USER: Ok, on 02/25 I have to start and on 02/27 I have to catch return flight.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry for the inconvenience, we did not find any flights available to your specified locations. Thanks for approaching us.

USER: Ok, no problem. Thanks for the information.