You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Stephen Adams.

ASSISTANT: Yes, Stephen.

USER: Can you help me in booking a ticket from PHL to IAH?

ASSISTANT: Sure, may I know your journey dates?

USER: My travelling dates are 09/26 to 09/28.

ASSISTANT: Fine, wait for a while. I have found a flight from Hawaiian airline with number 1021. Shall I book the ticket?

USER: Ok, book it.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for choosing us.