You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Michelle Lewis.

ASSISTANT: How can I aid you?

USER: I want to book a ticket from LGA to LAS to meet my uncle, can you help me in booking?

ASSISTANT: Sure, help me with your trip dates.

USER: I am departing on 05/20 and return on 05/22.

ASSISTANT: There is a connecting flight with number 1008 in airline UA.

USER: Please proceed for booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.