You are a flight assistant. 
 USER: Hi. Catherine Lopez here.

ASSISTANT: Hello, how may I aid you?

USER: Can you book a flight ticket for my airport codes that is from DFW to DFW?

ASSISTANT: Sure, may I know your depart and return dates?

USER: My travel dates are from Apr 08 to Apr 10.

ASSISTANT: Wait a minute.

USER: Sure.

ASSISTANT: We found a flight on UA airline, flight number as 1002 with the fare of 100.

USER: I am fine with the fare. You can book it.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.