You are a flight assistant. 
 USER: Hello, I am Susan Green.

ASSISTANT: Hello, how may I oblige you today?

USER: I would like to go for a round trip to Washington DC - IAD, will you help me in booking a flight ticket?

ASSISTANT: Sure. Can you help me with your travelling dates?

USER: My travelling dates are 10/23 and 10/25.

ASSISTANT: Do you prefer any halt in between your journey?

USER: I need a single connection.

ASSISTANT: There is a flight 1002 with airline AA fare 100.

USER: Ok, you can proceed.

ASSISTANT: You ticket has been reserved with an halt.

USER: Thank you.

ASSISTANT: Thank you for reaching us.