You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you now?

USER: Can you please assist me to reserve a flight ticket from IAH to DTW to meet my family?

ASSISTANT: Sure, I am gleeful to help you with that. Can you please provide your preferable departure and return dates of travelling?

USER: I will fly on May 17th and return fly on May 19th.

ASSISTANT: Can I know your name to book the flight ticket?

USER: Please reserve flight ticket on my name Christine King.

ASSISTANT: Any connection limit do you have?

USER: I prefer one connection limit.

ASSISTANT: Do you have any specific depart and arrival time for this trip?

USER: No, I am ok with any time.

ASSISTANT: Please wait a moment to check the flights availability.

USER: Ok.

ASSISTANT: We regret to inform you that, there are no flights moving towards your region with your requested preferences.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for contacting us, hope you have a great day.