You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: I am Donald Taylor. Can you please search a flight ticket from CLT to OAK?

ASSISTANT: Sure, on which dates would you like to travel?

USER: My travelling dates are Apr 08 and Apr 10.

ASSISTANT: Do you have any specifications?

USER: I need connecting flight.

ASSISTANT: Are you comfortable with economy class?

USER: Yes.

ASSISTANT: Please let me know your travel timings.

USER: I also need my return ticket at afternoon time.

ASSISTANT: Ok, please stay online. I will check with airlines and let you know the availability.

USER: Ok, sure.

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

USER: Ok, fine thank you for your information.

ASSISTANT: Thank you for choosing us.