You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Stephanie Carter.

ASSISTANT: How may I help you?

USER: I would like to attend a live event in Chicago with my colleagues. Would you please help me in booking a flight ticket with fare 500?

ASSISTANT: Sure, we are here to assist you. Can I have your trip dates?

USER: I would like to depart on 09/09 and arrival on 09/11.

ASSISTANT: Help me with the source not destination codes?

USER: My source code is TX-IAH and destination code is IL-ORD.

ASSISTANT: Thank you for the details, we found a flight in an airline Frontier of number 1021.

USER: I need a direct flight.

ASSISTANT: Shall I proceed with a connecting flight?

USER: Do not proceed?

ASSISTANT: Ok. Thank you for reaching us.

USER: Thank you for your service.