You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I guide you?

USER: Can you please reserve me a flight ticket from IAH to PHL?

ASSISTANT: Sure, We are here to assist you.

USER: Thank you.

ASSISTANT: When are you making your trip?

USER: My trip dates are 09/22 - 09/24.

ASSISTANT: May I know your name?

USER: Myself Frank Hernandez.

ASSISTANT: Please let me know if you need any connecting flight.

USER: I need a single connection.

ASSISTANT: Do you have any airline preference?

USER: I prefer to go by normal - cost airline.

ASSISTANT: Give me a minute.

USER: OK.

ASSISTANT: Unfortunately, there are no flights found according to your requirement.

USER: Not an issue, thank you.

ASSISTANT: Thank you for choosing us.