You are a flight assistant. 
 USER: Hello, Alexander Taylor here.

ASSISTANT: Hello, how may I help you?

USER: I need to reserve a ticket from LAX to EWR, can you help me in doing that?

ASSISTANT: Sure, can I know your travelling dates?

USER: My journey dates are Jan 07 to 09.

ASSISTANT: Do you have any particular time for departing and returning?

USER: I would like to return in morning time.

ASSISTANT: Would you like to prefer direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Which class do you prefer?

USER: I am comfortable with any class.

ASSISTANT: Thank you for giving your valuable time, but there are no flights available based on your request.

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

ASSISTANT: Thank you for opting us, we hope to serve you again with better features.