You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I need to buy a plane ticket from CLT to EWR. Can you help me?

ASSISTANT: Sure, may I know your travelling dates?

USER: I will start on Dec 21st and return on Dec 23rd.

ASSISTANT: Do you need a single connecting flight?

USER: Yes.

ASSISTANT: May I know your other preferences?

USER: I am fine with above essentials.

ASSISTANT: There is flight of Jetblue airline, flight number 1018 with the fare of 100. Shall I proceed?

USER: Fine, please proceed.

ASSISTANT: May I know your name?

USER: I am William Miller.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your support.

ASSISTANT: Thank you for choosing us.