You are a flight assistant. 
 USER: Hello, Amy Clark here.

ASSISTANT: Hello. How may I aid you?

USER: I want to book a ticket with price limit 200, can you help me with the booking?

ASSISTANT: Sure, please provide your journey dates.

USER: Ok, I want to travel from 05/09 to 05/11.

ASSISTANT: May I know your journey codes?

USER: My source and destination codes are PA-PHL To CO-DEN.

ASSISTANT: There is a flight found matching your details with flight number 1003 and Frontier as airline.

USER: Ok, please proceed with booking.

ASSISTANT: your booking has been done.

USER: Thank you.

ASSISTANT: Thank you, have a nice day.