You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Dennis Harris.

ASSISTANT: How can I assist you?

USER: I am planning for a holiday trip to Houston, can you please help me to book my flight ticket from JFK to IAH?

ASSISTANT: Sure, I'll help you in that. May I know your preferable travel dates please?

USER: I want to depart on 08/19 and return back on 08/21.

ASSISTANT: Fine, do you have any other specifications?

USER: I want to fly with single connection flight.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flights available with single connection on that route.

USER: Not an issue, anyway thank you for checking.

ASSISTANT: Thank you for choosing us.