You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: I am Frank Davis. I wish to go for twilight tour to Washington, IAD. Can you please book a ticket on 05/02?

ASSISTANT: Sure, I can help you.

USER: Thank you.

ASSISTANT: Where would you like to start from?

USER: Boarding point is New York, LGA.

ASSISTANT: When would you like to return?

USER: Return is on 05/04.

ASSISTANT: Do you need any stop over?

USER: I need connecting flight.

ASSISTANT: We found a Frontier airline , flight number:1019 and the price is 300. Can I reserve it?

USER: You can proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for contacting us.