You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you for the day?

USER: Can you please reserve a flight ticket to attend Business meeting in HOU from SFO?

ASSISTANT: Sure, I will help you in this.

USER: Thank you.

ASSISTANT: Is there any connection limit?

USER: Yes, I want to travel in a connecting flight.

ASSISTANT: On what dates you would like to book a flight ticket?

USER: My travelling dates are from Apr 23 to Apr 25.

ASSISTANT: May I have your name please?

USER: I am Melissa King.

ASSISTANT: Sorry, you have no flights to travel on your particular days of journey.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for approaching us.