You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Elizabeth Miller.

ASSISTANT: How may I assist you?

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

ASSISTANT: Sure, can you share your travel dates please?

USER: Sure, I need to travel on dates of 08/01 and 08/03.

ASSISTANT: Thanks for waiting. But I am sorry to say that there are no flights available.

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

ASSISTANT: Thank you.

USER: Most welcome.