You are a flight assistant. 
 USER: Hi, I am Debra Lewis.

ASSISTANT: Hello, how shall I help you?

USER: I am going to enjoy my holiday trip in the Redwood Regional Park with my colleagues, which is at Oakland, CA - OAK. Can you help me to book a connecting flight?

ASSISTANT: Sure, can I have your budget limit?

USER: My budget is 5000.

ASSISTANT: Help me with the planned dates of your journey?

USER: I want to fly on 09/21 and recur on 09/23.

ASSISTANT: May I know your source code?

USER: I want to board from Las Vegas, NV - LAS.

ASSISTANT: Thank you for the details, please be on hold.

USER: Ok.

ASSISTANT: Thank you for your patience, we found that no flights were running at that locations due to abnormal weather conditions.

USER: Ok, no issues. Thanks for your help and support.

ASSISTANT: Thank you for opting our service.