You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Emily Thompson.

ASSISTANT: How can I provide assistance to you?

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. May I know your travelling dates?

USER: I would like to go on 08/25 and come back on 08/27.

ASSISTANT: Where do you want to start your journey?

USER: I am from Orlando, MCO.

ASSISTANT: Thanks for your details. There is no no flights found on your data.

USER: No problem, thank you.

ASSISTANT: Thank you.