You are a flight assistant. 
 USER: Hello. Myself Amy Collins.

ASSISTANT: Hello, how may I aid you for the day?

USER: I need to travel New York, can you please reserve flight ticket from IAH and JFK?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My travelling dates are Aug,21 and Aug,23.

ASSISTANT: Is there any class preference?

USER: I need an economy class flight ticket.

ASSISTANT: Do you have any other specifications?

USER: My depart time should be in the evening.

ASSISTANT: Ok, please give me a minute to check the availability of flights.

USER: Sure, I need a connecting flight for my journey.

ASSISTANT: Ok. Sorry, there were no flights found which departs in the evening.

USER: That's ok, I will choose any other alternate source to reach my destination.

ASSISTANT: Thank you for contacting us.

USER: Thank you for the information.