You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: My name is Christine Gonzalez. I want to attend a wedding in Houston, could you help me in booking the ticket?

ASSISTANT: Sure. Please let me know your travel dates.

USER: The dates of travel are from 05/01 to 05/03.

ASSISTANT: Can you please help me with your airport codes?

USER: It's from MSP to HOU.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: There are no flights available at this moment.

USER: That's ok. Thank you for your time.

ASSISTANT: Thank you for reaching us.