You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I am Justin Thomas. I want to book a flight ticket from OAK to IAH. Could you help me in booking?

ASSISTANT: May I know your travelling dates, please?

USER: My travelling dates are from May 24-26.

ASSISTANT: Do you need any specifications for this reservation?

USER: My depart and return time should be in the morning.

ASSISTANT: Do you need any connection limit for this travel?

USER: I need 1 connecting flight.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there are no flight tickets available with your requirements.

USER: That's ok, no problem.

ASSISTANT: Thank you for reaching our service.

USER: Thank you.