You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Charles Baker. I want to book a flight ticket from ATL to OAK. Can you make a reservation for me?

ASSISTANT: Sure, I am here to help you with the ticket booking. Can you please tell me your travel dates?

USER: Thank you, my planned dates are on Jan 29 and return on Jan 31.

ASSISTANT: Ok, please let me know your preference related to number of connections.

USER: Yes, I need a single connecting flight.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Sorry to inform you, there are no flights found with your travel dates.

USER: Ok, not an problem. Thank you for your information.

ASSISTANT: You are welcome. Thank you for reaching us.