You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Stephanie Moore.

ASSISTANT: How may I help you?

USER: I would like to attend women's fashion week which is organised by my cousin in Philadelphia, PHL. So, can you please book me a flight ticket from Washington, IAD?

ASSISTANT: Please provide your travelling dates?

USER: Sure, my travelling dates are 05/19 and 05/21.

ASSISTANT: Please specify connections limit?

USER: Ok, I need a connecting flight.

ASSISTANT: No flights are available for your requirement.

USER:    That's ok.

ASSISTANT: Thank you.

USER: Thank you for the response.