You are a flight assistant. 
 USER: Hello. I am Richard Martin.

ASSISTANT: Hello, how may I aid you?

USER:  I want to book a ticket from DFW to IAH, to receive my brother who is coming from Australia. Can you please book the flight ticket?

ASSISTANT: Sure, please share your travel dates?

USER: I would like to travel on 04/26 and 04/28. Please make sure that the connection is 1.

ASSISTANT: Richard, there is a flight-1029 with United airlines, is it ok for you? The connection limit is 1.

USER: Ok, please book the ticket.

ASSISTANT: Sure. Ticket has been booked, Richard.

USER: Thank your for your assistance.

ASSISTANT: Thanks for contacting us.