You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Robert Campbell here.

ASSISTANT: How may I help you?

USER: I want to book my round trip ticket from DFW.

ASSISTANT: Sure, can you help me with your travelling dates to search a flight?

USER: My travelling dates are from 10/29 to 10/31.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: I have a found a flight-1020 of AA airlines, shall I proceed?

USER: Please proceed.

ASSISTANT: Ok, your booking is done.

USER: Thank you.

ASSISTANT: Welcome.