You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What help is required from my end?

USER: I am Larry Carter, looking for a flight booking service. Can you help me out with that?

ASSISTANT: Sure, I will help you.

USER: Good to hear that from you.

ASSISTANT: Carter, can you please let me know your travelling dates?

USER: I would like to start my journey on 06/25 and I will be return on 06/27.

ASSISTANT: Could you please provide the airport codes?

USER: Sure, I am planning to start my journey from SFO airport and my destination airport code is PHL.

ASSISTANT: Ok, wait a moment please.

USER: Sure, take your time.

ASSISTANT: There is a flight in Frontier airline with price 100, can I book it?

USER: Yes, you can proceed with booking.

ASSISTANT: Your ticket has been booked with flight number 1009.

USER: Thank you for your help in booking a flight ticket.

ASSISTANT: Thank you for approaching us.