You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: There is a business meeting in Philadelphia. Can you help to book the flight ticket for me?

ASSISTANT: Sure, I am here to help you. Can you please provide your nearest airport code of your origin?

USER: Sure, I am planning to start my journey from DCA.

ASSISTANT: Same way, please provide your destination airport code for enhanced search.

USER: Sure, the destination code which I decided is PHL.

ASSISTANT: May I know on which date you would like to start your journey from DCA terminal?

USER: Yes, I would like to fly on 09/12.

ASSISTANT: Please provide your return journey date to proceed further.

USER: Ok, the return date I had planned is 09/14.

ASSISTANT: Meanwhile, may I know your good name please?

USER: Sure, my name is Carol Green.

ASSISTANT: Wait a moment please, let me check with the best services on this route.

USER: Ok, take your own time.

ASSISTANT: According to your provided details, there is a service with Frontier airlines with 0 connection limit on this route, shall I book your ticket with this airlines?

USER: Actually, I am looking for the flight which had 1 connecting flight. Can you please help me with it?

ASSISTANT: Carol Green, I've searched with your request of 1 connection limit on this route, I couldn't find any services matching with your criteria.

USER: That's ok, thanks for your valuable support.

ASSISTANT: Sorry for the inconvenience.

USER: No problem.

ASSISTANT: Thank you for utilising our service, please utilise our service in future too.

USER: Welcome.