You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Jacob Davis. I want to meet my family at Philadelphia, can you please help me to book a ticket?

ASSISTANT: Sure. Can I know your travelling dates?

USER: I would like to leave between 06/18 and 06/20.

ASSISTANT: Please share me your airport codes.

USER: My airport codes are from DFW to PHL.

ASSISTANT: We found a Delta airline, flight number:!028 and the price is 100. Can I reserve it?

USER: May I know the flight number?

ASSISTANT: 1028 will be the flight number.

USER: Ok, please book this ticket.

ASSISTANT: Your flight ticket has been processed.

USER: Thank you so much.

ASSISTANT: Thank you.