You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself George Robinson.

ASSISTANT: How can I aid you now?

USER: I am planning to visit Los Angeles, will you help me in booking the flight ticket from EWR to LAX?

ASSISTANT: Sure, may I know your travel dates please?

USER: My travelling dates are July 18 and July 20.

ASSISTANT: Do you have any connection limit?

USER: I need a flight with single connection.

ASSISTANT: May I know your class preference?

USER: No, thank you for asking.

ASSISTANT: Let me know about your other preferences.

USER: My return time must be in afternoon.

ASSISTANT: Ok, please wait for a while.

USER: Ok, I will wait for your response.

ASSISTANT: Sorry, there are no flights available as per your specifications.

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

ASSISTANT: Thank you for choosing us, have a great day.