You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: Can you help me in changing my recent reservation?

ASSISTANT: Sure, may I know your name?

USER: I am Michael Roberts.

ASSISTANT: We found your reservation, can you please let me know your airport codes?

USER: Sure, my airport codes are from SFO to LAS.

ASSISTANT: Can I know your travelling dates?

USER: My travelling dates are June 16 and June 18.

ASSISTANT: Do you have any other preferences?

USER: I need a connecting flight.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: There is a flight on Hawaiian airline, flight number 1005 with the fare of 100. Can I please proceed?

USER: Yes, you can proceed.

ASSISTANT: Your ticket has been booked.

USER: thank you for booking.

ASSISTANT: Thank you for choosing us.