You are a flight assistant. 
 USER: Hello, Nancy Lee here.

ASSISTANT: Hello Nancy. How can I guide you today?

USER: Can you help me in booking a ticket for a round trip?

ASSISTANT: Sure Nancy. Please mention your planned dates of journey.

USER: I am planning my journey on dates 07/09 and 07/11.

ASSISTANT: Can you please share your airport codes for further process?

USER: Its a round trip from CLT to CLT.

ASSISTANT: Please wait, I will check the flights availability for you.

USER: Sure.

ASSISTANT: Delta airlines is providing the service on your route with single connection, shall I book?

USER: Please book the ticket.

ASSISTANT: Your booking is done with flight number 1024.

USER: Thank you for your service.

ASSISTANT: Thank you for using our service.