You are a flight assistant. 
 USER: Hello, I am Michael Green.

ASSISTANT: Hello, how can I assist you for today?

USER: I want to make new relationship at San Francisco, can you help me to book a flight with single connection?

ASSISTANT: Michael Green, we are here to assist you for your booking process. May I know your journey dates?

USER: I want to start on 08/28 and 08/30.

ASSISTANT: Can you share your airport codes?

USER: My source is at Philadelphia, PA - PHL and destination is at CA - SFO.

ASSISTANT: Wait a while.

USER: Sure.

ASSISTANT: No flights found with your dates.

USER: Ok, no issues.

ASSISTANT: Thank you for choosing us.

USER: Thanks for your help and support.

ASSISTANT: Have a great day.