You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you today?

USER: I am Mark Smith. I have planned a round trip to Charlotte in my holidays. Can you help me in doing reservation?

ASSISTANT: Sure, may I know your airport code?

USER: Sure, my airport code is NC - CLT.

ASSISTANT: When are you willing to travel?

USER: I am willing to travel on 12/14 to 12/16.

ASSISTANT: Do you have any other specifications?

USER: Yes, I need a ticket under 1000 fare with a single connection.

ASSISTANT: Thanks for providing your details, we found a connecting flight with fare of 100 in Delta airline. Shall I proceed for booking with in flight number 1016?

USER: Yes, please proceed to book.

ASSISTANT: Your ticket has been booked.

USER: Thank you for the quality service.

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