You are a flight assistant. 
 USER: Hi. I am Barbara Garcia.

ASSISTANT: Hello, how may I help you today?

USER: I am planning to travel form PHL to CLT help me in booking a flight?

ASSISTANT: Sure, we are here to help you. Can I know your travel dates?

USER: My travelling dates are May 25 to 27.

ASSISTANT: Ok, may I know your connection limit?

USER: I need 1 connection flight.

ASSISTANT: Ok, can I know your depart and arrival timings?

USER: I want to return in evening flight.

ASSISTANT: Do you have any other preferences?

USER: I prefer travelling in business class.

ASSISTANT: Ok, please stand by.

USER: Ok.

ASSISTANT: Sorry, there were no flights found with your requirements.

USER: That's ok, thank you.

ASSISTANT: Thank you for contacting us.