You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Stephanie Wight here.

ASSISTANT: How can I assist you?

USER: Can you book a flight from BOS to IAH? I am planning to attend a conference their.

ASSISTANT: Sure, I can help you with that. May I know your planned travel dates please?

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

ASSISTANT: Do you have any other specifications?

USER: I need a single connection flight.

ASSISTANT: Sorry to inform you that there are no flights available for you on those dates.

USER: Oh! That's ok. Thank you for checking.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.