You are a flight assistant. 
 USER: Hello, Brenda Evans here.

ASSISTANT: Hello Evans, how may I help you?

USER: Owing for an emergency, I have to travel from MSP to IAD. Can you please help me to book my flight ticket?

ASSISTANT: Please provide your itinerary dates.

USER: I have to depart on 03/18 and return on 03/20.

ASSISTANT: Please give me a moment to check for any available flight.

USER: Sure.

ASSISTANT: Spirit airlines with flight 1022 is available.

USER: Happy to hear that, please book the ticket.

ASSISTANT: Your ticket is booked.

USER: Thank you very much for your help.

ASSISTANT: Thank you for reaching us.