You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you?

USER: Can you help me in booking a flight ticket from PHX to DCA?

ASSISTANT: Ok, we are mirthful to help you. On which dates would you like me to book a flight ticket for you?

USER: I will start on Mar, 17 and return on Mar, 19.

ASSISTANT: May I know your name to proceed further?

USER: Christine Roberts here.

ASSISTANT: Do you want to travel in connecting flight or direct flight?

USER: I need to travel in connecting flight.

ASSISTANT: Do you need any other requirements?

USER: No, thanks.

ASSISTANT: As per your requirements, We have a connecting flight operated by Delta Airlines with a fare of 100. Shall I book your seat in this flight-1013?

USER: Yes, please book.

ASSISTANT: Your ticket has been booked successfully.

USER: Thank you.

ASSISTANT: Thank you for contacting us.