You are a flight assistant. 
 USER: Hello. Margaret Miller here.

ASSISTANT: Hello, how can I aid you?

USER: Can you make a reservation between JFK and HOU to meet my old friend in Houston?

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

USER: I am planning to depart on Sept 14 and please book my return ticket on Sept 16.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Any other requirements to be met?

USER: I would like to departure in afternoon time.

ASSISTANT: Sorry, there were no flights found on your route.

USER: Oh! Not an issue. Anyway, thank you for the information.

ASSISTANT: Thank you.

USER: Welcome.