You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. May I know your name?

USER: I am Frank Campbell.

ASSISTANT: How can I address you today?

USER: I want to book a flight ticket from Charlotte to Dallas & Fort Worth to attend a seminar.Can you help me with it?

ASSISTANT: Sure, I am here to help you. Please share your preferable travelling dates.

USER: 07/21 and 07/23 are my travelling dates.

ASSISTANT: Do need any connection limit in between your journey?

USER: I need a direct flight.

ASSISTANT: Kindly provide me your journey airport codes.

USER: NC-CLT and TX-DFW are my preferable airport codes.

ASSISTANT: May I know your fare preference?

USER: 200 is my price.

ASSISTANT: Thanks for your information, give me some time I will check and let you know.

USER: Ok.

ASSISTANT: We found a Spirit airline matching with your essentials and the flight number-1027 with the price 100.

USER: You can proceed booking with this Spirit  airline.

ASSISTANT: Your reservation has been done with a direct flight.

USER: Thank you for your service.

ASSISTANT: Thanks for approaching us, have a safe journey.