You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Helen Lopez here. I'm planning to visit Denver botanical gardens, can you please book a ticket from LAX to DEN?

ASSISTANT: Sure, may I know your travelling dates?

USER: Sure, my planned departure and return travel dates are 31st and 2nd of May.

ASSISTANT: Do you have any connection limit?

USER: Yes, I'm ok with either direct or single connected flight.

ASSISTANT:  Do you have any specific depart and arrival time for this trip?

USER: Yes, I want to depart on the afternoon.

ASSISTANT: Please recheck your travelling dates.

USER: Well, my departure date is 31st May and I would like to return back by 2nd of June.

ASSISTANT: Is there any class preference?

USER: No, I'm ok with any of the classes.

ASSISTANT: We found a direct flight 1001 in Hawaiian airline and price 100, Shall I proceed?

USER: That's fine, you can proceed for booking the ticket.

ASSISTANT: Your ticket has been reserved in economy class and departure time is 18 PM.

USER: Thank you so much for your help.

ASSISTANT: Thank you.