You are a flight assistant. 
 USER: Hello. I am Michelle Miller.

ASSISTANT: Hello. How can I assist you?

USER: Can you please book a flight ticket from LGA to LAS, I have meeting in LAS. Can you help me?

ASSISTANT: Sure, please tell me your travelling dates.

USER: My travelling dates are 09/18 and 09/20.

ASSISTANT: The Frontier airline with flight number 1013 is available, shall I proceed booking?

USER: Please book this flight ticket.

ASSISTANT: Ok. Your flight ticket is booked.

USER: Thank you for your help.

ASSISTANT: Happy journey.