You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I serve you at this moment?

USER: I would like to meet my client at Los Angeles, can you please help me to book my flight ticket from EWR to LAX?

ASSISTANT: Sure, may I know your travelling dates?

USER: Sure, I have to depart on Jan 28th and also please book my return ticket on Jan 30th.

ASSISTANT: Ok, do you need any break in between the journey?

USER: I prefer for a direct flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your good name please?

USER: My name is Katherine Lewis.

ASSISTANT: There are no flights found on your requested dates. Thank you for reaching us.

USER: That's fine, thank you for checking.