You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Melissa Smith.

ASSISTANT: Melissa, how may I help you?

USER: I would like to book a ticket from DEN to EWR, can you help me?

ASSISTANT: Sure, please provide your travel dates.

USER: My travel dates are 03/14 and 03/16.

ASSISTANT: Please hold on for a while.

USER: Sure.

ASSISTANT: Hawaiian airlines with flight 1009 is available.

USER: You can book it.

ASSISTANT: Your ticket is booked.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.