You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Can you help me to book a flight ticket from EWR to HOU?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My trip dates are Nov, 2 and Nov, 4.

ASSISTANT: Do you have any other specifications?

USER: I need to return at evening time with connecting flight.

ASSISTANT: Please help me with your name for booking.

USER: Jack Smith.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with your requirements.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for reaching us.