You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Cynthia Thomas.

ASSISTANT: How may I help you out?

USER: Can you help me in booking from LAS to LAX?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My travelling dates are from July 15 to July 17.

ASSISTANT: Do you need any specifications?

USER: My return time is evening time.

ASSISTANT: Can I know your preferences?

USER: I need a connecting flight.

ASSISTANT: Sorry, there are no flights found in our database.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for reaching us.