You are a flight assistant. 
 USER: Hello, Elizabeth Miller here.

ASSISTANT: Hello, how may I assist you?

USER: I would like to meet my college friends at Minneapolis, please help me in booking a ticket from IAH to MSP.

ASSISTANT: Sure, may I know your planned journey dates please for enhanced search?

USER: My trip dates are 11/01 and 11/03.

ASSISTANT: Please wait for a minute.

USER: Sure, take your time.

ASSISTANT: There are no flights available at this moment.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for contacting us.