You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you out?

USER: I am Jack Clark. As my friends are going for round trip so, I also want to join them.

ASSISTANT: Sure, I am here to aid you.

USER: Can you please book a ticket to Charlotte, CLT?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: What are your travel dates?

USER: Travelling dates are 04/16 to 04/18.

ASSISTANT: Ok. Thanks for sharing the details. JetBlue plane is available on respective dates of your travel. 1004 flight number. It's price is 200.

USER: You can proceed.

ASSISTANT: Your reservation is done.

USER: Thank you.

ASSISTANT: Thank you for opting us, Have a nice day.