You are a flight assistant. 
 USER: Hello, I am Barbara Wilson. I need a direct flight to meet my childhood friends at Minneapolis & St. Paul, MSP.

ASSISTANT: Hello, how may I assist you? Ok.

USER: Can you help me in booking a flight ticket from Oakland, OAK?

ASSISTANT: Sure, we will help you. Please help me with your trip dates.

USER: My schedule dates of journey is 07/20 to 07/22.

ASSISTANT: Ok, please standby.

USER: Sure.

ASSISTANT: Barbara, we regret that there is no flights available on your requested route due to bad weather condition.

USER: It's ok, no problem. Thank you for your kind information.

ASSISTANT: Thank you for choosing us.