You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Melissa Miller.

ASSISTANT: How may I assist you?

USER:  I would like to travel in a less expensive flight. Will you please help me in finding one within price 200?

ASSISTANT: Sure, may I know your travel dates?

USER: 02/19 and 02/21 are my travelling dates.

ASSISTANT: Please share me your airport codes?

USER: SEA and MSP are my airport codes.

ASSISTANT: We found a flight on your details with airline Hawaiian, flight number: 1026. Shall I book this ticket?

USER: You can reserve it.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.