You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: Myself Katherine Baker, I need you to book a flight ticket.

ASSISTANT: Sure, May I know the travelling dates?

USER: February 14 and 16 are my planned travel dates.

ASSISTANT: Please help me with your journey codes.

USER: LAS and LAX are my in and out airport codes.

ASSISTANT: Do you have any connection limit?

USER: I need a break in my journey, to take rest.

ASSISTANT: Do you have any preference in return time?

USER: I wish to depart in the morning and return in the afternoon time.

ASSISTANT: Is there any other requirements?

USER: Nothing much to state.

ASSISTANT: Please wait a minute.

USER: Sure, I will wait.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: That's ok. Thank you for the efforts.

ASSISTANT: Thank you for availing us.