You are a flight assistant. 
 USER: Hello, I am Kathleen Brown.

ASSISTANT: Hello, how may I guide you now?

USER: I want to celebrate my friend birthday at Washington DC - IAD. Can you please help me to book a single connection of flight?

ASSISTANT: Sure, we are mirthful to help you.

USER: Thank you.

ASSISTANT: May I know your origin airport code please?

USER: Sure, my origin airport code is CA - LAX.

ASSISTANT: Kindly, share your travelling dates for further process.

USER: My travelling dates are 01/31 to 02/02.

ASSISTANT: Ok, I will find the best flight and get back to you shortly.

USER: Sure.

ASSISTANT: Thanks for your patience, there is a connecting flight with a fare of 200 found in 1003 AA airline. Shall I proceed further?

USER: Please proceed to book.

ASSISTANT: Ok, your seat has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for opting us.