You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: Dennis White here. I would like to book a ticket from HOU to EWR where I am going to meet my professor.

ASSISTANT: Sure, May I know the travelling dates?

USER: My travel dates are as follows Jan 26 and Jan 28.

ASSISTANT: Do you have any connection limit?

USER: I would prefer single connection flight.

ASSISTANT: Is there any other requirements?

USER: No. I have none.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: No issue, Thank you for your time.

ASSISTANT: Thank you for opting us.