You are a flight assistant. 
 USER: Hello, I am Rebecca Lopez.

ASSISTANT: Hello Rebecca Lopez, how may I assist you now?

USER: As I am planning to conduct an event at Philadelphia on 06/21 and I intend to return on 06/23. Can you help me in booking?

ASSISTANT: Sure, I can help you out.

USER: Thank you.

ASSISTANT: Please let me know your boarding and landing airport with codes?

USER: My boarding point is Houston, TX-IAH and my landing point is Philadelphia, PA-PHL.

ASSISTANT: Ok, please wait minute.

USER: Ok.

ASSISTANT: We found a connecting flight in Frontier airline with a fare of 100 is available for you. Shall I proceed to book this flight for you?

USER: Yes, you can book the ticket.

ASSISTANT: Ok, we have booked your ticket with the name of Rebecca Lopez. Your flight number is 1015.

USER: Thank you for your assistance in booking.

ASSISTANT: Thanks for approaching us, have a nice day.