You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Frank Wright. I am planning to attend a meeting at Boston MA-BOS, help me in booking my flight ticket from Houston TX-IAH.

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: On which dates would like to reserve this ticket?

USER: My trip dates will be 09/04 to 09/06.

ASSISTANT: Do you prefer any specification?

USER: I need a connecting flight.

ASSISTANT: Do you prefer economy or business class?

USER: I prefer a economy class.

ASSISTANT: Sorry there is no flight on your details.

USER: Its ok, thank you.

ASSISTANT: Thank you.