You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Edward Anderson here. Can you please help me in booking a flight ticket from SFO to LGA?

ASSISTANT: May I know your travelling dates please?

USER: Sure, my travel dates are from June 09 to June 11.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Do you need any other requirements?

USER: I would like to depart in the evening and return in the afternoon.

ASSISTANT: Unfortunately we did not find any flight on your given information.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for opting us.