You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Frank Evans.

ASSISTANT: Frank Evans, how can I assist you today?

USER: I want to book a flight ticket from HOU to OAK, to attend my friend marriage. Can you help me in booking?

ASSISTANT: Sure, I will help you with that booking. Could you please share me your travel dates?

USER: Sure, my departure on 01/20 and arrival on 01/22.

ASSISTANT: There is a direct flight available in Delta airline with the price 200. Shall I proceed?

USER: Please search the flight with 1 connection.

ASSISTANT: Please hold for a moment, let me check the contention limit.

USER: Ok, take your own time.

ASSISTANT: Sorry to tell you, there are no direct flights found as per your travel dates.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thank you for your quick response.