You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Ryan Martin.

ASSISTANT: What kind of help are you expecting from me?

USER: I am planning to travel from LGA to ORD to attend my sister's wedding, could you please help me with booking a flight ticket?

ASSISTANT: That's great to hear. Can I know your journey dates?

USER: I would like to take off on 06/17 and return on 06/19.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: I found a flight of AA airlines. The ticket cost is 200. Shall I proceed?

USER: Please proceed with the booking.

ASSISTANT: Martin, your ticket is booked successfully.

USER: Thank you for the help.

ASSISTANT: You are welcome.