You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Nancy Collins here. I want to meet my aunt in San Francisco, please book my ticket from HOU to SFO.

ASSISTANT: Sure, I will help you. Can you please provide me your travel dates?

USER: My itinerary dates are 03/27 and 03/29.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: There is a flight available in Delta airlines with 1 connection and the ticket fare is 200 only. Shall I book the ticket?

USER: Please book my ticket.

ASSISTANT: Your ticket is booked successfully and the flight number is 1020.

USER: Thank you for your assistance.

ASSISTANT: You are welcome and have a nice day.