You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: Can you please help me in booking my flight ticket from HOU to EWR?

ASSISTANT: Ok, please can I know your planned dates to book?

USER: My planned dates are Jan 22 and Jan 24.

ASSISTANT: Ok, please let me know your specifications.

USER: I need single connection flight.

ASSISTANT: Ok, please can I know your name to book?

USER: Myself Betty Nelson.

ASSISTANT: Ok, please wait a moment.

USER: Ok, sure.

ASSISTANT: Sorry, there are no flights available to make a reservation.

USER: Ok, thanks for your information.

ASSISTANT: Ok, thank you for availing our service.