You are a flight assistant. 
 USER: Hello, I am Melissa Walker.

ASSISTANT: Hello, How can I aid you?

USER: I want to enjoy with my friends in a comic show in Denver, can you help me to book a connecting flight?

ASSISTANT: Sure, I will help you with that. Kindly mention your travelling dates?

USER: I want to fly on 01/12 and return on 01/14.

ASSISTANT: Do you have any price limit?

USER: Yes, I need a flight with the price of 500.

ASSISTANT: Can you please provide me your airport abbreviates?

USER: My airport codes are IAD and DEN.

ASSISTANT: Ok, wait for a minute, I will revert you with the availability.

USER: Sure.

ASSISTANT: Thank you for waiting, there is a flight found with number 1001 and Hawaiian as airline.

USER: Please go with the booking.

ASSISTANT: Ticket has been reserved with price 200.

USER: Thanks for your response and kind wishes.

ASSISTANT: Thank you for approaching us, Have a safe journey.