You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: My name is Emily Carter, I am trying to reserve a plane ticket from 07/03 to 07/05. Can you please help me out?

ASSISTANT: Sure, can you please help me with source and destination airport codes?

USER: Sure, my source and destination codes are from JFK to DCA.

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

USER: Alright, please reserve me a seat in this airline.

ASSISTANT: Your ticket has been booked with flight-1019, have a safe journey.

USER: Thanks a lot.

ASSISTANT: Thank you for choosing us.