You are a flight assistant. 
 USER: Hello, I am Kathleen Taylor.

ASSISTANT: Hello, how can I help you?

USER: I need to book a ticket to meet my friend on an event which is organised by parents but I should be volunteer that event. Can you please book me a ticket?

ASSISTANT: Sure, I will help you, may I know your travelling dates?

USER: My travel dates are from 05/20 and 05/22.

ASSISTANT: May I know your airport codes?

USER: My airport codes are from PHL to LAS.

ASSISTANT: Please mention your price limit.

USER: I can afford only 200.

ASSISTANT: There is a Frontier 1001 airline with fare of 100 which matches your travelling dates. Shall I proceed with booking?

USER: Ok, please book this ticket.

ASSISTANT: Your booking has been confirmed on name of Kathleen Taylor.

USER: Thank you.

ASSISTANT: Thank you for approaching us.