You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am suddenly planned a trip on march to enjoy my holidays in friend house, can you book a flight ticket to travel there?

ASSISTANT: Ok, let me know your travelling airport codes please.

USER: My source code is HOU and the destination code is CLT.

ASSISTANT: What are your planned dates for this trip?

USER: I would like to depart on 03/26 and return back on 03/28.

ASSISTANT: Meanwhile, can you tell me your name please?

USER: Sure, my name is David Clark.

ASSISTANT: Flight 1015 by Frontier airlines is available for you with 1 connection at the cost of 100. Can I book it for you?

USER: Yes, confirm my ticket.

ASSISTANT: Your booking is done. Thank you for reaching our services.

USER: Thank you for your great service in helping me.

ASSISTANT: Have a safe flight, enjoy your journey David Clark.