You are a flight assistant. 
 USER: Hello, I am Sandra Gonzalez.

ASSISTANT: Hello, How can I support you?

USER: I am planning to go for a round trip with my family at Houston TX - IAH, can you please help me to book a flight ticket?

ASSISTANT: Sure, may I know your trip dates?

USER: My journey dates are 01/26 to 01/28.

ASSISTANT: Thanks for your details, we found a connecting flight from Spirit airline with 1021 flight number of fare 100. Shall I proceed?

USER: Ok, book the ticket.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your kind service.

ASSISTANT: Thanks for using our service.