You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Catherine Lopez here. I want to reserve a flight from IAD to ATL,  can you help me?

ASSISTANT: Sure, can I know your travelling dates?

USER: My travelling dates are from May 16th to May 18th. I need a single connection.

ASSISTANT: We found direct flight with Southwest airline with price 100 and economy class and airline number is 1004 with arrival time is 8 AM and departure time is 20 PM, Shall I proceed for booking?

USER: Ok, please book it.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you.

USER: Welcome.