You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, can you provide your name?

USER: I am Angela Turner.

ASSISTANT: Glad to meet you Angela Turner. What would I assist for you?

USER: I am planning to visit Washington IAD for business purpose. Can you help me to book a flight from PHL? Please search a flight with price limit of 500.

ASSISTANT: Ok, on which dates you want to travel?

USER: My travelling dates are 11/07 and 11/09.

ASSISTANT: There is a flight with airline Southwest, which is exactly travelling on your preferable dates. Shall I proceed for the booking?

USER: That's great, please proceed with booking that flight.

ASSISTANT: Flight 1008 which matches all your criteria has been booked for you.

USER: Thank you for your help and support.

ASSISTANT: Most welcome.Hope you have a safe journey.