You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I am Brandon Wright, planning to meet my son who is doing job in army. Can you book flight to Minneapolis, MSP?

ASSISTANT: Sure, May I know the source code?

USER: I am boarding from SFO, San Francisco.

ASSISTANT: Please help me with your journey dates.

USER: I scheduled for couple of days, 09/27 to 09/29.

ASSISTANT: Please wait a second.

USER: Sure.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Ok.

ASSISTANT: Thank you for opting us.

USER: Thanks for your information.