You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Anthony Hernandez here.

ASSISTANT: In which way I can help you at this moment?

USER: I have planned to attend a business seminar in IAH, can you please help me out with booking of a flight ticket from EWR?

ASSISTANT: Sure, I can help you with that.

USER: Thank you.

ASSISTANT: Can you please mention your travel dates for booking flight ticket?

USER: Sure, I willing to travel on 02/08 and please book my return ticket on 02/10.

ASSISTANT: Ok, please hold on a moment, I will check flight availability.

USER: Ok, take your time.

ASSISTANT: Sorry for the inconvenience no flights available in this route as per your requested dates.

USER: Oh! So sad to hear. Anyway, I will choose another alternative to go there. Thank you for the information.

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

USER: Welcome.