You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight to San Francisco to spend my holidays. Can you find me a flight from New York?

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travel dates?

USER: I will fly on July 23 and return on July 25.

ASSISTANT: Ok, may I know your travelling airport codes?

USER: My source point is EWR and destination is SFO.

ASSISTANT: Ok, please mention your name.

USER: My name is Melissa Thomas.

ASSISTANT: Let me know your connection limit.

USER: I prefer a connecting flight.

ASSISTANT: Do you have any specification?

USER: I want my return flight in afternoon.

ASSISTANT: Sorry, no flights are available on your preferable travel dates.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us, have a nice day.