You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Thomas Parker, want to travel from IAH to JFK. Please help me in booking my ticket.

ASSISTANT: May I know your travelling dates, please?

USER: My travelling dates are from 01/23 to 01/25.

ASSISTANT: Do you need any specifications?

USER: I need a connecting flight.

ASSISTANT: Sorry, there are no flight tickets available on your journey dates.

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching our service.