You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: I need to travel to SFO  for visit to music concert, can you please reserve my ticket from AUS?

ASSISTANT: On which name should I reserve the flight ticket?

USER: Sure, my name is Joshua Evans here.

ASSISTANT: Can I know your travelling dates?

USER: Ok, my travelling dates are from Apr, 11 to Apr, 13.

ASSISTANT: Do you have any connection limit?

USER: Yes, flight has to be with a single connection.

ASSISTANT: Do you have any other specifications?

USER: Yes, I need a return time at evening with economy class.

ASSISTANT: Please wait a moment.

USER: Sure, I will wait.

ASSISTANT: Sorry, there are no flights found on given dates.

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

ASSISTANT: Thank you for reaching us.