You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Justin Walker here. I want to reserve my flight ticket from Houston, can you please help me?

ASSISTANT: Sure, may I know your airport codes please?

USER: I want to book a round trip from HOU.

ASSISTANT: Ok, may I know your travel dates please?

USER: Sure, my respective travelling dates are from  04/18 to 04/20.

ASSISTANT: Thanks for your patience. I have found Frontier airlines which flies with one connection.

USER: Ok its perfect, you can proceed with booking my ticket.

ASSISTANT: Yes, I have confirmed your flight ticket.

USER: Thanks for your help in booking my flight ticket.

ASSISTANT: Thank you.