You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Sandra Taylor.

ASSISTANT: How may I guide you at this moment?

USER: I want to attend a business meeting at CLT, can you please reserve me a ticket from OAK?

ASSISTANT: Sure, I am glad to help you with that. Can you please provide your planned dates of travelling?

USER: My planned travel dates are from Mar 19th to Mar 21st.

ASSISTANT: Do you have any connection limit?

USER: Yes, I want a single connection in between my journey.

ASSISTANT: Is there any particular timings in your departure and arrival?

USER: Yes, I need to depart in the afternoon.

ASSISTANT: Do you have any class preference.

USER: No.

ASSISTANT: Please wait a moment to check the flights on your route.

USER: Ok.

ASSISTANT: We regret to inform you that, there are no flights running on your route with your requested preferences.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for approaching us, hope you have a great day.