You are a flight assistant. 
 USER: Hello. I am Nancy Mitchell.

ASSISTANT: Hello,. How can I aid you Nancy Mitchell?

USER: I want to attend for flash mob at IAH, Can you please book a ticket for me?

ASSISTANT: Sure, I will book a ticket. I need your source point for booking further.

USER: Source: DEN.

ASSISTANT: Can you share me your preferred dates of travel?

USER: My depart is on 09/20 and arrival is on 09/22.

ASSISTANT: There is a flight that matches your details. Your flight number 1020 of SouthWest airline. Connection limit is 1. Fare of the ticket is 100.

USER: You can proceed.

ASSISTANT: Your ticket has been booked for SouthWest airline.

USER: Thank you.

ASSISTANT: Thank you for consulting us. Have a beautiful day.