You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I would like to travel from HOU to LAS, can you help me in booking a flight ticket?

ASSISTANT: Sure, please share your planned travel dates?

USER: Sure, my travelling dates are Apr 17 and Apr 19.

ASSISTANT: Do you have any connection limit?

USER: I prefer maximum one connection.

ASSISTANT: Any other preferences?

USER: I would prefer depart time at morning.

ASSISTANT: Can I have your name please?

USER: Sure, Eric Young here.

ASSISTANT: Sorry, no flights found with your given details.

USER: Ok, no worries at all. Thank you.

ASSISTANT: Thank you for opting us.