You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Is this Central travel agency? I am Melissa Collins. There is a meeting in St. paul-MSP with my client, so I want to book a ticket from san francisco-SFO.

ASSISTANT: Sure, I will help you for booking. May I know your travelling dates?

USER: Departure date from San Francisco is on 09/23 and return on 09/25 from St.paul.

ASSISTANT: As per your required dates, there is a flight available for you with 1 connection. Shall I proceed?

USER: Proceed for booking.

ASSISTANT: Your ticket is confirmed with flight number 1009 and airline is Delta.

USER: Thanks for helping me out.

ASSISTANT: Welcome.