You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Frank Williams.

ASSISTANT: How may I help you?

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

ASSISTANT: Sure, please help me with your journey dates.

USER: My planned journey dates are 04/10 and 04/12.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: I found a flight for you in JetBlue airlines with price 200. Can I proceed?

USER: Please book the ticket.

ASSISTANT: Ok, your booking is confirmed with flight number 1010.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.