You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Eric Lewis.

ASSISTANT: How can I assist you?

USER: I planned to attend for a wedding in IAH, can you please help me to book a flight ticket from EWR?

ASSISTANT: Sure Eric, can I know the travel dates please?

USER: I prefer to travel on 08/15 and 08/17.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: Sorry, there are no flights available on your dates.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for approaching us.