You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I would like to travel from OAK to SEA, can you please help me to book the flight ticket with the price under 5000.

ASSISTANT: Ok, may I know your travel dates to check the flight availability?

USER: I want to depart on 12/14 and return on 12/16.

ASSISTANT: Ok, please may I know on whose name I have to book?

USER: My name is Melissa White.

ASSISTANT: Ok, as per the data base there are no flights available.

USER: Not an issue, thank you for checking.

ASSISTANT: Ok, thank you for choosing our agency.