You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am Catherine King, can you help me to book a direct flight from PHL?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My journey dates are 05/17 and 05/19.

ASSISTANT: Ok, may I know your destination code to proceed further?

USER: My destination is PHX.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Ok, there is a flight 1018 in Spirit airline matching your details with price 100. Shall I proceed?

USER: Yes, proceed with booking.

ASSISTANT: Ok, your booking is done.

USER: Thank you.

ASSISTANT: Welcome.