You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I have to go IAH for attending a business meeting there, can you please book a flight ticket from IAD?

ASSISTANT: Sure, may I know on what dates you have planned to travel?

USER: My departure date is 08/13 and please book my return ticket also on 08/15.

ASSISTANT: May I know your good name please?

USER: Sure, my name is Mary Hall.

ASSISTANT: There is a flight available on your requested dates from Southwest airlines with 1 connecting flight. Would you like to travel in this airlines?

USER: Yes, I am ok with this airline, please proceed.

ASSISTANT: Your ticket is booked with 1008.

USER: Thank you for your help.

ASSISTANT: Most welcome.