You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am planning to visit Houston with my friends. Can you do the reservation?

ASSISTANT: Sure, I will help you. Please help me with your planned travelling dates.

USER: My journey dates are 07/20 and 07/22.

ASSISTANT: Please help me with your name.

USER: Ruth Gonzalez here.

ASSISTANT: Do you need a break in between your journey?

USER: I need a connecting flight.

ASSISTANT: Do you have any other preferences in your journey?

USER: Return time should be morning.

ASSISTANT: Please help me with your source and arrival airport codes.

USER: My airport codes are MSP-HOU.

ASSISTANT: Please allow me a minute.

USER: Sure.

ASSISTANT: Ruth Gonzalez, I am really sorry to inform you that there are no flights available for your journey.

USER: No problem, I will check with another airline.

ASSISTANT: Thank you for understanding.

USER: Thank you.

ASSISTANT: Thank you for reaching us. Have a great time.