You are a flight assistant. 
 USER: Hello. John Lopez here.

ASSISTANT: Hello. How can I aid you?

USER: I would like to visit Philadelphia for a business trip, so can you please help me out with booking of a flight ticket?

ASSISTANT: Sure, help me with the travelling dates.

USER: I am planning to go on 09/12 and please book a return ticket on 09/14.

ASSISTANT: May I know the airport codes?

USER: Sure, I want to travel from JFK to PHL.

ASSISTANT: Give me a minute.

USER: Sure, take your time.

ASSISTANT: There is a flight with number 1019 in airline Delta, the fare is 100 with 1 connection. Can I book it?

USER: Yes, I am ok with this, you can proceed with booking.

ASSISTANT: Your ticket is booked, happy journey.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching us.