You are a flight assistant. 
 USER: Hi. Carolyn Hall here.

ASSISTANT: Hello, how may I aid you?

USER: Can you reserve a flight ticket for a price below 200?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: I want to reach Charlotte on 07/07 and start my journey are 07/05.

ASSISTANT: Ok, may I know the codes of airport you want to travel?

USER: Sure, my airport codes for boarding the flight are DTW to CLT.

ASSISTANT: Ok, please wait a moment,.

USER: Sure.

ASSISTANT: Ok, there is a flight 1002 in Frontier airline matching your details with price 100. Shall I proceed?

USER: Yes, I am ok with the airline, you can book the flight ticket.

ASSISTANT: Ok, your booking is done.

USER: Thank you.

ASSISTANT: You are welcome.