You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Carolyn Thomas.

ASSISTANT: How may I be your helping hand today?

USER: I would like to visit Oakland to receive my parents, can you please help me to book a flight ticket from JFK to OAK?

ASSISTANT: Sure, please tell me your travelling dates.

USER: Sure, my trip dates are Feb 03 and Feb 05.

ASSISTANT: Ok, please share your class preference.

USER: I would like to travel in economy class.

ASSISTANT: Ok, do you need any lay by in between the journey?

USER: I need a single connection flight.

ASSISTANT: Do you have any other requirements?

USER: My airline preference is normal-cost and departing time is evening.

ASSISTANT: Ok, please wait for some time.

USER: Sure, take your own time.

ASSISTANT: There are no flights which matches your specifications.

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

ASSISTANT: Thank you for reaching us.