You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Alexander Lopez is my name.

ASSISTANT: How can I assist you today?

USER: Please assist me for booking from IAH to EWR to attend for an interview.

ASSISTANT: Sure, I can help you with that. May I know your planned travel dates please?

USER: My planned travelling dates are Sept 2 and return on Sept 4.

ASSISTANT: May I know your class preference please?

USER: I am fine with any class.

ASSISTANT: Do you have any time concerns?

USER: My return time is evening.

ASSISTANT: Please let me know if you have any other specifications.

USER: I need a normal cost airline.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry to say, there are no flights available for you on those dates with your given details.

USER: That's Ok, thanks for your time.

ASSISTANT: Thank you for choosing us, have a nice day.