You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Donna Phillips.

ASSISTANT: In which way I can aid you at this moment?

USER: Can you please book a flight ticket from LAX to JFK?

ASSISTANT: Sure, I will aid you with that. Can you please mention your preferable travel dates?

USER: Thank you. I have planned my travel dates as Nov 30 and Dec 02.

ASSISTANT: Are you ok with connecting flight or you need a direct flight?

USER: I am ok with both of them/.

ASSISTANT: Do you need any specific depart and arrival time for this trip?

USER: I would like to return in afternoon time.

ASSISTANT: Ok, please wait a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you for reaching us.

USER: Most welcome.