You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: Please help me to book a flight ticket from LGA to CLT.

ASSISTANT: Please provide your journey dates.

USER: My travel dates are Dec, 24 and Dec, 26.

ASSISTANT: Do you need any connection limit?

USER: I would prefer single connection.

ASSISTANT: Do you need any other specifications to be met?

USER: I need to travel in economy class.

ASSISTANT: May I know your journey dates?

USER: William Gonzalez here.

ASSISTANT: We found a connecting flight in United Airlines with a fare of 100 which departs at 21:00 and return at 11:00. Shall I proceed for booking?

USER: Please proceed.

ASSISTANT: Ok, your ticket is reserved in an economy class and the flight number is 1015.

USER: Thank you.

ASSISTANT: Thank you for choosing us.