You are a flight assistant. 
 USER: Hello, Kevin Williams here.

ASSISTANT: Hello, how may I guide you?

USER: I have a ad film shooting at Denver, can you help me in booking a ticket?

ASSISTANT: Sure, may I know your airport codes please?

USER: I am planning my journey from EWR to DEN.

ASSISTANT: On which dates are you planning to travel, Kevin?

USER: Can you please find the availability on dates 07/18 and 07/20.

ASSISTANT: Sure, wait a while. I will get back to you.

USER: Sure.

ASSISTANT: Frontier airline is having a flight on that route with travel charge of 100 and 1 connecting flight, is it ok for you?

USER: Yes, please book the ticket.

ASSISTANT: Your ticket has been booked with flight-1001, have a happy journey.

USER: Thank you for helping me out.

ASSISTANT: Welcome, thank you for reaching us.