You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Sandra Gonzalez here.

ASSISTANT: How may I guide you today?

USER: I am a salsa dancer, I have to take part in a contest at Denver. Could you book my ticket from Houston?

ASSISTANT: Sure, I will help you with that. Can you please share your preferable journey dates?

USER: My itinerary dates are May 4 and May 6.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Can you please share your airport codes?

USER: My genesis and terminus airport codes are IAH and DEN.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: No problem, I will find an alternative way to travel.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your assistance.