You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: My name is Mark Phillips. Can you help me in booking a ticket to Seattle? I need to attend my friend's marriage.

ASSISTANT: Sure, can you please share your travel dates?

USER: My planned journey dates are 07/13 and 07/15.

ASSISTANT: Could you please help me with the airport codes?

USER: The source and destination airport codes are HOU and SEA respectively.

ASSISTANT: Let me check for the availability of flight.

USER: Ok, take your time.

ASSISTANT: Mark, there is a flight available with price 200 and the connection is 1 with Hawaiian airline. Would you like me to proceed with the booking?

USER: Please book the ticket.

ASSISTANT: Your booking is confirmed with 1004 flight number.

USER: Thank you for your service.

ASSISTANT: Thank you for contacting us.