You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Deborah Adams here. Can you book a connecting flight to Seattle?

ASSISTANT: What type of service you are excepting from us? Ok, may I know your airport codes?

USER: My airport codes for boarding the flight are DEN to SEA. My price limit is less than 500.

ASSISTANT: Ok, can I know your itinerary dates?

USER: My travelling dates for journey are 11/03 to 11/05.

ASSISTANT: Ok, wait for a minute.

USER: Sure.

ASSISTANT: Sorry to say that there are no flight' s available based on your travelling dates.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching us.