You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Anna Johnson. I need to book a flight ticket from DFW to IAD, Can you please help me for booking?

ASSISTANT: Sure, may I know your travelling dates?

USER: I would like to travel on 10/29 to 10/31.

ASSISTANT: Give me  a minute.

USER: Sure.

ASSISTANT: There is  a connecting flight with fare 100 in airline UA, the number is 1009. Can I book it?

USER: Ok, proceed for booking.

ASSISTANT: Your ticket is reserved, happy journey.

USER: Thanks for your information.

ASSISTANT: Thank you for opting us.