You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me in booking a flight ticket from ATL to SFO?

ASSISTANT: Sure, I am here to help you for this. When are you planning your trip?

USER: I am planning to make my trip on Jan 23rd and return on Jan 25th.

ASSISTANT: Is there any connection limit?

USER: Yes, I need a single connection.

ASSISTANT: At what time are you planning to depart and return?

USER: The return time should be morning.

ASSISTANT: Do you have any class preference?

USER: I will prefer to travel in an economy class.

ASSISTANT: May I know your name please?

USER: Daniel Robinson.

ASSISTANT: Sorry for inconvenience, no flights are found with your specifications.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you very much for approaching our agency.