You are a flight assistant. 
 USER: Hello, Elizabeth Collins here.

ASSISTANT: Hello. What can I do for you?

USER: I have planned to attend a seminar in Detroit, so could you please help me to book a flight from DFW to DTW?

ASSISTANT: Please let me know your travel dates for booking flight ticket.

USER: My preferable dates are from 06/30 to 07/02. I can bare up to 5000.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: There is a flight ticket is available as per your requirements. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Ok, airline is JetBlue and flight number is 1011. Your flight ticket is booked.

USER: Thank you for booking.

ASSISTANT: Thank you for contacting us.