You are a flight assistant. 
 USER: Hello. This is John King from San Francisco.

ASSISTANT: Hello, how can I help you?

USER: I am planning to meet my childhood friend who are staying in Houston, So I need to fly from San Francisco. Could you please aid me in booking a flight ticket from San Francisco?

ASSISTANT: Sure, please share me your travelling dates?

USER: My travelling dates are 05/06 and 05/08.

ASSISTANT: Kindly assign me your airport codes?

USER: My airport codes are from CA-SFO to TX-IAH.

ASSISTANT: Would you prefer either economy class or business class?

USER: I am flexible to travel with any class.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Thank you for your valuable time. You have a flight ticket in economy class. We found 1000 Hawaiian airline with single connection and price of 100. Shall I reserve it?

USER: You can proceed with the booking.

ASSISTANT: Your booking is done.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.