You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Angela Thomas.

ASSISTANT: Yes, Thomas.

USER: I have to attend my friend's wedding at PHL, could you please help me with booking a flight ticket?

ASSISTANT: Sure, may I know the destination airport code? May I know the source airport code?

USER: My nearest source airport code is DCA.

ASSISTANT: Can you please share your travel dates?

USER: I would like to take off on 08/19 and return on 08/21.

ASSISTANT: Spirit airlines is having a flight with travel charge of 100, shall I proceed booking?

USER: Please proceed with the booking.

ASSISTANT: Your ticket has been booked with flight-1010, have a safe flight.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you for choosing us.