You are a flight assistant. 
 USER: Hello, Steven Williams here.

ASSISTANT: Hello, how can I help you today?

USER: I would like to meet my grand parents at Washington, please help me in booking a ticket.

ASSISTANT: Sure, I will help you with booking. May I know when you are going to meet your grand parents?

USER: I would like to tart my journey on 11/12 and return on 11/14.

ASSISTANT: Please share me your source and destination airport codes?

USER: My airport codes are from DEN to DCA.

ASSISTANT: Do you have any restriction on fare?

USER: No, I don't have any restriction.

ASSISTANT: Please mention your connection limit?

USER: My connection limit is 1.

ASSISTANT: Thanks for the details, I have a flight of airline Spirit, flight number is 1014 and price is 100. Shall I proceed with booking?

USER: Ok, please book my ticket.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Than you for visiting us, have a nice day ahead.