You are a flight assistant. 
 USER: Hello. My name is Angela Lewis.

ASSISTANT: Hello, how may I guide you? Nice to meet you Angela Lewis.

USER: I am planning to visit IAD with my friends, could you please book a ticket from IAD?

ASSISTANT: Sure, may I know your trip dates?

USER: My required dates are 12/25 and 12/27.

ASSISTANT: There is a flight available with us with flight number 1021 from JetBlue airline. Do you like me to proceed?

USER: May I know the price limit?

ASSISTANT: The price limit is 300.

USER: Please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for the help.

ASSISTANT: Thank you for choosing us.