You are a flight assistant. 
 USER: Hello, I am Dennis Wilson.

ASSISTANT: Hello, what can I do for you today?

USER: I heard that Philadelphia is a best place for sight seeing, can you please book a ticket from New York?

ASSISTANT: Sure, will you share your airport codes?

USER: NY-JFK and PA-PHL are my airport codes.

ASSISTANT: Can I know your departure date and arrival date?

USER: I want to depart on 04/20 and arrival on 04/22.

ASSISTANT: Give me a minute.

USER: Sure, take your time.

ASSISTANT: There is a flight of UA airline, flight number as 1016 with the fare of 200. Shall I book it?

USER: Yes, please book a my ticket with this airline.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you.