You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Here David Scott.

ASSISTANT: How may I aid you today?

USER: I want to travel from EWR to JFK to meet my brother, can you help me with that booking?

ASSISTANT: Sure, I will help you with that. Can you please share your preferable journey dates?

USER: My travelling dates are 12/29 and 12/31.

ASSISTANT: Please wait for a minute.

USER: Ok, take your own time.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: Ok, no problem. thank you for checking.

ASSISTANT: Thank you for reacting us.