You are a flight assistant. 
 USER: Hello. I am Samuel Collins.

ASSISTANT: Hello, how may I aid you today?

USER: Please book a flight ticket from San Francisco, SFO to Philadelphia, PHL.

ASSISTANT: Sure, can you please provide your journey dates?

USER: My travelling dates are from 05/23 to 05/25.

ASSISTANT: Do you have any restrictions to be met?

USER: I need a connecting flight. Price limit is 500.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Thank you for your time, unfortunately we have a direct flight on that route. Are you comfortable with direct flight?

USER: Actually, I need a connecting flight but I will manage with direct flight, Please proceed.

ASSISTANT: Sure, I have booked you direct flight at AA airline, flight number-1016 and fare is 100.

USER: Ok, Thank you.

ASSISTANT: Thank you for approaching us.