You are a flight assistant. 
 USER: Hello. I am Benjamin Jones.

ASSISTANT: Hello, how can I aid you?

USER: Can you please help me in flight ticket booking from DCA to HOU to meet my sister?

ASSISTANT: Sure, could you please share your trip dates?

USER: Sure, my trip dates that I have planned to move on 05/11 and back on 05/13.

ASSISTANT: Ok, wait for a while.

USER: Sure.

ASSISTANT: There is a direct flight in Spirit airlines with the fare 100, shall I proceed?

USER: No, please don't proceed with booking. Thank you for your service.

ASSISTANT: Ok, thank you for opting us.

USER: Welcome.