You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: My friend has invited for his birthday party. Can you help me in booking a ticket?

ASSISTANT: Sure, I am here to help you. May I know your travelling dates?

USER: I am planning to travel on dates 04/24 and 04/26.

ASSISTANT: May I know your airport abbreviations?

USER: My preferred airport codes are IAH and SEA respectively.

ASSISTANT: May I know your price limit?

USER: The price limit is 200.

ASSISTANT: I am happy to tell that there is a Spirit 1003 airline which matches your requirements. Shall I  proceed with that airline?

USER: Please book the ticket with the name Jonathan Mitchell.

ASSISTANT: Sure, your booking has been confirmed.

USER: Thank you for booking the ticket.

ASSISTANT: Thank you for approaching us.