You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what can I do for you today?

USER: I have a plan to visit Boston. Can you help me in booking flight ticket from IAH to BOS?

ASSISTANT: Sure, can you share your travel dates please?

USER: I will start my journey on Sept 06 and return on Sept 08.

ASSISTANT: Do you have any class preferences?

USER: I want to travel in economy class.

ASSISTANT: May I know your connection limit?

USER: I need a flight with single connection.

ASSISTANT: Would you like any other preferences in your journey?

USER: I don't have any other preferences.

ASSISTANT: Let me know your name please?

USER: Scott Scott here.

ASSISTANT: Sorry, no flights are running on your route.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for contacting us.