You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Andrew Garcia.

ASSISTANT: Nice to meet you Andrew Garcia.

USER: I want to visit New York, could you please help me in booking?

ASSISTANT: Sure, please provide me your airport codes.

USER: My preferred airport codes are CLT to EWR.

ASSISTANT: May I know your travelling dates?

USER: My journey dates are 12/23 and 12/25.

ASSISTANT: There is a flight available with your provided details and the flight number is 1027 from UA airline.

USER: Ok, please book it.

ASSISTANT: Sure, your ticket has been booked.

USER: Thank you for your response.

ASSISTANT: You are welcome.