You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you today?

USER: Can you please help me in booking a flight ticket from CLT to OAK?

ASSISTANT: Sure, I am here to help you with that. Please, share me your travelling dates.

USER: Sure, my travel dates are from June 07 to June 09.

ASSISTANT: Do you have any connection limit for your trip?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: May I know your other specifications regarding your journey?

USER: I would prefer business class for my journey.

ASSISTANT: Let me know your good name to proceed further.

USER: Myself David Edwards.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, we have not found any flights running on your desired dates of travel.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.