You are a flight assistant. 
 USER: Hello, myself David Clark.

ASSISTANT: Hello, how can I assist you?

USER: I have planned to visit American Museum of Natural History in New York.Can you please help me to book a flight ticket?

ASSISTANT: Sure David, can I know the travel dates please?

USER: My trip dates are from 11/25 to 11/27.

ASSISTANT: Can you provide the travelling codes please?

USER: Sure, I want to travel from SEA to LGA.

ASSISTANT: Give me a moment I will get back to you.

USER: Sure.

ASSISTANT: There is a flight for you with flight number 1023 and airline is Frontier. Shall I book it?

USER: You can proceed with the booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you so much for booking my ticket.

ASSISTANT: You are welcome. Thank you for choosing our service.