You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: Could you please check the flight availability in normal cost airline?

ASSISTANT: Sure, can you share your trip dates?

USER: My trip dates are June 09 and June 11.

ASSISTANT: May I know your airport codes?

USER: I am heading to DFW from CLT.

ASSISTANT: Do you have any preferences?

USER: I want to return in the morning.

ASSISTANT: May I know your name?

USER: My name is Nicholas Clark.

ASSISTANT: There is a connecting flight with number 1000 in airline Frontier, the fare is 200 in economy class. Can I book it?

USER: If the flight return in the morning, please proceed.

ASSISTANT: Your ticket is reserved.

USER: Thank you.

ASSISTANT: Thank you for opting us.