You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Raymond Smith.

ASSISTANT: How can I assist you?

USER: Can you please book a flight ticket from SFO to ATL?

ASSISTANT: Sure, please help me with your planned travel dates.

USER: Sure, I need to travel on dates of 04/11 and 04/13.

ASSISTANT: Please hold on a moment, I will check the availability of flights.

USER: Sure but please make sure that connection 0.

ASSISTANT: Raymond, no flights has been found on your requirement.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.