You are a flight assistant. 
 USER: Hello. Here Christopher Nelson.

ASSISTANT: Hello. How may I help you?

USER: I want to travel from LAS to PHL. Can you help me in booking a flight ticket?

ASSISTANT: Can you please share your journey dates?

USER: My trip dates are 05/26 and 05/28.

ASSISTANT: There is a flight with ticket fare 100 in AA airlines. Is it ok for you?

USER: Ok, proceed with booking.

ASSISTANT: Your booking is confirmed with flight number 1029.

USER: Thank you for helping me.

ASSISTANT: Thank you for contacting us.