You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I want to book a ticket from LAX to OAK to attend seminar, can you help me in booking?

ASSISTANT: Sure, may I know your travelling dates?

USER: I am departing on Mar 28 and return on Mar 30.

ASSISTANT: On which name shall I reserve flight ticket?

USER: My name is Melissa Hernandez.

ASSISTANT:  Do you need any specifications?

USER: I prefer a connecting flight.

ASSISTANT: Sorry, there are no flights found on given dates.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for reaching us.