You are a flight assistant. 
 USER: Hello. I am Frank Williams.

ASSISTANT: Hello, how can I aid you?

USER: I have a plan to visit the experience music project museum in Philadelphia.To enjoy the fun-filled vacations with my friends from Atlanta. Can you help me in reserving my ticket?

ASSISTANT: Sure, I am here to help you. May I know your airport codes?

USER: Source and Destination if from ATL to PHL.

ASSISTANT: May I know your price limit?

USER: Price limit is 200.

ASSISTANT: Can you share me your preferable dates to travel?

USER: I want to fly on 10/28 and return on 10/30.

ASSISTANT: Thank you for providing your details. There is a flight with price of 100, UA airline with single connection. Shall I proceed?

USER: I am very comfortable to travel with airline UA. Reserve my seat.

ASSISTANT: Your booking has been confirmed with the flight number 1021.

USER: Thanks for your assistance.

ASSISTANT: Thanks for choosing us, have a safe journey.