You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am John Green. I need to attend the interview on 06/29, so please help me in booking a ticket on before date 06/28 and return ticket on 06/30?

ASSISTANT: Sure, may I know your airport codes for booking?

USER: My travelling airport codes are PHX and DTW.

ASSISTANT: Do you have any specifications?

USER: Price should be below 1000 and with 1 connection.

ASSISTANT: There is a connecting flight with number 1013 in airline Frontier, the fare is 100.

USER: You can proceed with booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for aiding me.

ASSISTANT: Thank you for reaching us.