You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What help do you need from us today?

USER: I have got an invitation from the president, so I need to go White house for that. Please help me with booking a flight ticket to Washington, DC - IAD.

ASSISTANT: Sure, can I have your origin airport?

USER: I will board the flight from Houston, TX - IAH.

ASSISTANT: What are your preferable travel dates?

USER: My travel dates are 08/06 and 08/08.

ASSISTANT: Please mention your name to proceed further?

USER: Sure, my name is Jessica Parker.

ASSISTANT: Delta airline of flight 1007, with fare- 100 available for your journey. Are you comfortable with this connecting flight?

USER: Please proceed.

ASSISTANT: Ok, Yout ticket is confirmed.

USER: Thank you.

ASSISTANT: Thanks for approaching us.