You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: Can you help me in booking the flight ticket from SFO to JFK?

ASSISTANT: Sure, I am ready to help you. Can I have your journey dates please?

USER: My planned dates of journey are Dec 30 and Jan 01.

ASSISTANT: Ok, please tell me your airlines preference.

USER: I am ok with any airlines.

ASSISTANT: Ok, may I know your full name please?

USER: My name is Donna King.

ASSISTANT: Is there any other preferences?

USER: I prefer direct flight for this trip.

ASSISTANT: Ok, please be on hold for a while. I will search the flight and get the flight details.

USER: Sure, I will wait for your information.

ASSISTANT: I am really sorry to inform  you that, there is no direct flight found in this route with the dates you have mentioned.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: You are most welcome. Thank you for approaching us.