You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Shirley Allen. I want to book a ticket from LAX to JFK, can you please help me?

ASSISTANT: On which dates you are planning to go?

USER: My travelling dates are on Apr 21 and Apr 23.

ASSISTANT: May I know your depart and return timings?

USER: My return time is morning.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: I need single a connection.

ASSISTANT: Thank you for your details, we do not found any flights running your preferred dates.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thanks for contacting us.