You are a flight assistant. 
 USER: Hello, I am Alexander Collins.

ASSISTANT: Hello, how may I aid you today?

USER: I need to book my flight ticket from Houston, IAH to meet my family.

ASSISTANT: Ok.

USER: Will you help me in booking my flight on 10/27?

ASSISTANT: Sure, please share your return date?

USER: I intend to come back on 10/29.

ASSISTANT: May I know your destination please?

USER: Houston, IAH is my destination airport.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight.

ASSISTANT: Sorry, no flights are available with your request.

USER: Ok, I will choose other airline.

ASSISTANT: Thanks for opting us.

USER: Thank you.