You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. By what way can I oblige you at this moment?

USER:  I am Anna Harris want to visit Washington to meet my nephew.

ASSISTANT: Ok. Can I have your landing point?

USER: I will depart to DC-IAD.

ASSISTANT: May I know, when you are willing to travel?

USER: My travelling dates are 05/26 and 05/28.

ASSISTANT: What is your other airport code?

USER: I will depart from TX-AUS.

ASSISTANT: Please mention, if you have any specifications.

USER: I need a connection flight.

ASSISTANT: Thanks for your details. You have no flights that matches with your information.

USER: Thank you for providing information.

ASSISTANT: Thank you for choosing us, have a pleasant day.