You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I  help you?

USER: Charles Wilson here. I would like to book a ticket from SFO to DFW.

ASSISTANT: Your travelling dates please?

USER: My itinerary travel dates are as follows July 02 and July 04.

ASSISTANT: Do you have any specifications?

USER: Yes, I would like to board on single connection flight and return time should be in the afternoon.

ASSISTANT: I am sorry no flights found on your route.

USER: No problem, thank you for the time and information.

ASSISTANT: Thank you for choosing us.