You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Shirley Wright.

ASSISTANT: How may I assist you?

USER: I need  to attend a conference meeting with my colleagues in DTW, can you help me with booking under a fare of 1000?

ASSISTANT: Sure, may I know your travel dates?

USER: I will fly on Jan 21 and return on Jan 23.

ASSISTANT: Where would like to leave?

USER: My source airport code is DEN.\.

ASSISTANT: We found a flight on your details with airline Spirit, flight number: 1015. Shall I book this ticket?

USER: Please go with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.