You are a flight assistant. 
 USER: Hello, I am Angela Phillips.

ASSISTANT: Hello, how may I best render you?

USER: I want to attend my Business meeting with my clients in Washington, IAD, can you please help me to book a flight from OAK?

ASSISTANT: Sure, do you need any way station in between journey?

USER: Yes, I need a stopover.

ASSISTANT: Can you please share me your travelling dates?

USER: My journey dates are from 06/22 to 06/24.

ASSISTANT: Just give me a minute.

USER: Ok.

ASSISTANT: Sorry to inform that there is no flight found on your requested dates.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thanks for approaching us, have a nice day.