You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Katherine Clark, want to travel from LGA to LAS. Please help me in booking my ticket.

ASSISTANT: Sure, tell me your travel dates please?

USER: My travelling dates are from 11/30 to 12/02.

ASSISTANT: May I know your departure and return time please?

USER: Make sure, my return time should be in the morning with 1 connection.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: Thanks for waiting. Sorry there no flights available in the morning time.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you.